From patchwork Fri Jan 6 20:07:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: William Zhang X-Patchwork-Id: 13091747 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3B0E6C3DA7A for ; Fri, 6 Jan 2023 20:10:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=OMNm0H+2KL+YOwh0Pgp30flN6d2d3d/WOSha4pm8TxY=; b=Y62sTULR69K8my As7jFEyOQGlc4Fb++uAkW5a0t1VXMBd0FwjAfooLMSwgNnSr6WaNBttM1fWveikZQIdN8mH/7YnF0 D0VTZ4gBX4G25uTmnvkkAgGD5i8h57YWyF63g7mFr+rT0SUJO8u0zcLvq1k4hl4MaTLLN2tDWzf5u euiAQpze8vcWL1HT1M1lmulnkmR9UAMnca+PDFljwI/cfhD/L/UAZDi5V3nxoOy5TyDW899ajMjRI zTz+xrynlXaVET9QpC2JzZaZzU5AhSFf0MUd/KIbjRuRu3IOfVN9d43DNs8LUsgRNYvceDvpHcT82 UYiXVkaXBwbmpU02v39g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pDt22-00EirI-Bw; Fri, 06 Jan 2023 20:09:38 +0000 Received: from relay.smtp-ext.broadcom.com ([192.19.144.205]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pDt1y-00EiqD-RP for linux-arm-kernel@lists.infradead.org; Fri, 06 Jan 2023 20:09:36 +0000 Received: from mail-lvn-it-01.lvn.broadcom.net (mail-lvn-it-01.lvn.broadcom.net [10.75.146.107]) by relay.smtp-ext.broadcom.com (Postfix) with ESMTP id 0FFF8C0003CA; Fri, 6 Jan 2023 12:09:33 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 relay.smtp-ext.broadcom.com 0FFF8C0003CA DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=broadcom.com; s=dkimrelay; t=1673035773; bh=IvHElhieoeG6ehpcVfKKnJWwfWVb9CrCRmCz4f0TsyY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pT0P6pG4RQwlbn0muM+ogmkEyLytkpHaI2e3eBnoXKEwVkeiOmmV9RFtWI7P4GD2N ckhhxHFF/WzsITMTZA+fTcGA1Ly0iYivGOMy4NPg9o6XjoAGn1Rd/+JJMrk2B3Gx38 dywWSGdElENaS0vmBNa7uoR0QIMLcMivMgpv55Rc= Received: from bcacpedev-irv-3.lvn.broadcom.net (bcacpedev-irv-3.lvn.broadcom.net [10.75.138.105]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail-lvn-it-01.lvn.broadcom.net (Postfix) with ESMTPS id CA6D318041CAC6; Fri, 6 Jan 2023 12:09:32 -0800 (PST) Received: by bcacpedev-irv-3.lvn.broadcom.net (Postfix, from userid 28376) id C26F2101B33; Fri, 6 Jan 2023 12:09:32 -0800 (PST) From: William Zhang To: Linux SPI List , Broadcom Kernel List Cc: anand.gore@broadcom.com, tomer.yacoby@broadcom.com, dan.beygelman@broadcom.com, joel.peshkin@broadcom.com, f.fainelli@gmail.com, jonas.gorski@gmail.com, kursad.oney@broadcom.com, dregan@mail.com, William Zhang , Krzysztof Kozlowski , =?utf-8?b?UmFmYcWC?= =?utf-8?b?IE1pxYJlY2tp?= , Rob Herring , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 04/16] ARM: dts: broadcom: bcmbca: Add spi controller node Date: Fri, 6 Jan 2023 12:07:56 -0800 Message-Id: <20230106200809.330769-5-william.zhang@broadcom.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20230106200809.330769-1-william.zhang@broadcom.com> References: <20230106200809.330769-1-william.zhang@broadcom.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230106_120935_042125_68BC1E84 X-CRM114-Status: GOOD ( 12.68 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add support for HSSPI controller in ARMv7 chip dts files. Signed-off-by: William Zhang --- arch/arm/boot/dts/bcm47622.dtsi | 17 +++++++++++++++++ arch/arm/boot/dts/bcm63138.dtsi | 17 +++++++++++++++++ arch/arm/boot/dts/bcm63148.dtsi | 17 +++++++++++++++++ arch/arm/boot/dts/bcm63178.dtsi | 18 ++++++++++++++++++ arch/arm/boot/dts/bcm6756.dtsi | 18 ++++++++++++++++++ arch/arm/boot/dts/bcm6846.dtsi | 17 +++++++++++++++++ arch/arm/boot/dts/bcm6855.dtsi | 18 ++++++++++++++++++ arch/arm/boot/dts/bcm6878.dtsi | 18 ++++++++++++++++++ arch/arm/boot/dts/bcm947622.dts | 4 ++++ arch/arm/boot/dts/bcm963138.dts | 4 ++++ arch/arm/boot/dts/bcm963138dvt.dts | 4 ++++ arch/arm/boot/dts/bcm963148.dts | 4 ++++ arch/arm/boot/dts/bcm963178.dts | 4 ++++ arch/arm/boot/dts/bcm96756.dts | 4 ++++ arch/arm/boot/dts/bcm96846.dts | 4 ++++ arch/arm/boot/dts/bcm96855.dts | 4 ++++ arch/arm/boot/dts/bcm96878.dts | 4 ++++ 17 files changed, 176 insertions(+) diff --git a/arch/arm/boot/dts/bcm47622.dtsi b/arch/arm/boot/dts/bcm47622.dtsi index f4b2db9bc4ab..da4b71ef2471 100644 --- a/arch/arm/boot/dts/bcm47622.dtsi +++ b/arch/arm/boot/dts/bcm47622.dtsi @@ -88,6 +88,12 @@ uart_clk: uart-clk { clock-div = <4>; clock-mult = <1>; }; + + hsspi_pll: hsspi-pll { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <200000000>; + }; }; psci { @@ -119,6 +125,17 @@ bus@ff800000 { #size-cells = <1>; ranges = <0 0xff800000 0x800000>; + hsspi: spi@1000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "brcm,bcm6328-hsspi"; + reg = <0x1000 0x600>; + clocks = <&hsspi_pll &hsspi_pll>; + clock-names = "hsspi", "pll"; + num-cs = <8>; + status = "disabled"; + }; + uart0: serial@12000 { compatible = "arm,pl011", "arm,primecell"; reg = <0x12000 0x1000>; diff --git a/arch/arm/boot/dts/bcm63138.dtsi b/arch/arm/boot/dts/bcm63138.dtsi index b774a8d63813..1631694c0496 100644 --- a/arch/arm/boot/dts/bcm63138.dtsi +++ b/arch/arm/boot/dts/bcm63138.dtsi @@ -66,6 +66,12 @@ apb_clk: apb_clk { clock-div = <4>; clock-mult = <1>; }; + + hsspi_pll: hsspi-pll { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <400000000>; + }; }; /* ARM bus */ @@ -203,6 +209,17 @@ serial1: serial@620 { status = "disabled"; }; + hsspi: spi@1000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "brcm,bcm6328-hsspi"; + reg = <0x1000 0x600>; + clocks = <&hsspi_pll &hsspi_pll>; + clock-names = "hsspi", "pll"; + num-cs = <8>; + status = "disabled"; + }; + nand_controller: nand-controller@2000 { #address-cells = <1>; #size-cells = <0>; diff --git a/arch/arm/boot/dts/bcm63148.dtsi b/arch/arm/boot/dts/bcm63148.dtsi index 7cd55d64de71..6dccba705f5d 100644 --- a/arch/arm/boot/dts/bcm63148.dtsi +++ b/arch/arm/boot/dts/bcm63148.dtsi @@ -60,6 +60,12 @@ periph_clk: periph-clk { #clock-cells = <0>; clock-frequency = <50000000>; }; + + hsspi_pll: hsspi-pll { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <400000000>; + }; }; psci { @@ -100,5 +106,16 @@ uart0: serial@600 { clock-names = "refclk"; status = "disabled"; }; + + hsspi: spi@1000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "brcm,bcm6328-hsspi"; + reg = <0x1000 0x600>; + clocks = <&hsspi_pll &hsspi_pll>; + clock-names = "hsspi", "pll"; + num-cs = <8>; + status = "disabled"; + }; }; }; diff --git a/arch/arm/boot/dts/bcm63178.dtsi b/arch/arm/boot/dts/bcm63178.dtsi index 043e699cbc27..8db27e7ac9fd 100644 --- a/arch/arm/boot/dts/bcm63178.dtsi +++ b/arch/arm/boot/dts/bcm63178.dtsi @@ -71,6 +71,7 @@ periph_clk: periph-clk { #clock-cells = <0>; clock-frequency = <200000000>; }; + uart_clk: uart-clk { compatible = "fixed-factor-clock"; #clock-cells = <0>; @@ -78,6 +79,12 @@ uart_clk: uart-clk { clock-div = <4>; clock-mult = <1>; }; + + hsspi_pll: hsspi-pll { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <200000000>; + }; }; psci { @@ -109,6 +116,17 @@ bus@ff800000 { #size-cells = <1>; ranges = <0 0xff800000 0x800000>; + hsspi: spi@1000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "brcm,bcm6328-hsspi"; + reg = <0x1000 0x600>; + clocks = <&hsspi_pll &hsspi_pll>; + clock-names = "hsspi", "pll"; + num-cs = <8>; + status = "disabled"; + }; + uart0: serial@12000 { compatible = "arm,pl011", "arm,primecell"; reg = <0x12000 0x1000>; diff --git a/arch/arm/boot/dts/bcm6756.dtsi b/arch/arm/boot/dts/bcm6756.dtsi index 5c72219bc194..2af35a48b6c3 100644 --- a/arch/arm/boot/dts/bcm6756.dtsi +++ b/arch/arm/boot/dts/bcm6756.dtsi @@ -88,6 +88,12 @@ uart_clk: uart-clk { clock-div = <4>; clock-mult = <1>; }; + + hsspi_pll: hsspi-pll { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <200000000>; + }; }; psci { @@ -119,6 +125,18 @@ bus@ff800000 { #size-cells = <1>; ranges = <0 0xff800000 0x800000>; + hsspi: spi@1000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "brcm,bcmbca-hsspi"; + reg = <0x1000 0x600>, <0x2610 0x4>; + reg-names = "hsspi", "spim-ctrl"; + clocks = <&hsspi_pll &hsspi_pll>; + clock-names = "hsspi", "pll"; + num-cs = <8>; + status = "disabled"; + }; + uart0: serial@12000 { compatible = "arm,pl011", "arm,primecell"; reg = <0x12000 0x1000>; diff --git a/arch/arm/boot/dts/bcm6846.dtsi b/arch/arm/boot/dts/bcm6846.dtsi index 81513a793815..fa26b2107f93 100644 --- a/arch/arm/boot/dts/bcm6846.dtsi +++ b/arch/arm/boot/dts/bcm6846.dtsi @@ -61,6 +61,12 @@ periph_clk: periph-clk { #clock-cells = <0>; clock-frequency = <200000000>; }; + + hsspi_pll: hsspi-pll { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <400000000>; + }; }; psci { @@ -100,5 +106,16 @@ uart0: serial@640 { clock-names = "refclk"; status = "disabled"; }; + + hsspi: spi@1000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "brcm,bcm6328-hsspi"; + reg = <0x1000 0x600>; + clocks = <&hsspi_pll &hsspi_pll>; + clock-names = "hsspi", "pll"; + num-cs = <8>; + status = "disabled"; + }; }; }; diff --git a/arch/arm/boot/dts/bcm6855.dtsi b/arch/arm/boot/dts/bcm6855.dtsi index 5fa5feac0e29..bf028f0ad84c 100644 --- a/arch/arm/boot/dts/bcm6855.dtsi +++ b/arch/arm/boot/dts/bcm6855.dtsi @@ -78,6 +78,12 @@ uart_clk: uart-clk { clock-div = <4>; clock-mult = <1>; }; + + hsspi_pll: hsspi-pll { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <200000000>; + }; }; psci { @@ -109,6 +115,18 @@ bus@ff800000 { #size-cells = <1>; ranges = <0 0xff800000 0x800000>; + hsspi: spi@1000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "brcm,bcmbca-hsspi"; + reg = <0x1000 0x600>, <0x2610 0x4>; + reg-names = "hsspi", "spim-ctrl"; + clocks = <&hsspi_pll &hsspi_pll>; + clock-names = "hsspi", "pll"; + num-cs = <8>; + status = "disabled"; + }; + uart0: serial@12000 { compatible = "arm,pl011", "arm,primecell"; reg = <0x12000 0x1000>; diff --git a/arch/arm/boot/dts/bcm6878.dtsi b/arch/arm/boot/dts/bcm6878.dtsi index 4ec836ac4baf..be7ab5f52da4 100644 --- a/arch/arm/boot/dts/bcm6878.dtsi +++ b/arch/arm/boot/dts/bcm6878.dtsi @@ -61,6 +61,7 @@ periph_clk: periph-clk { #clock-cells = <0>; clock-frequency = <200000000>; }; + uart_clk: uart-clk { compatible = "fixed-factor-clock"; #clock-cells = <0>; @@ -68,6 +69,12 @@ uart_clk: uart-clk { clock-div = <4>; clock-mult = <1>; }; + + hsspi_pll: hsspi-pll { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <200000000>; + }; }; psci { @@ -100,6 +107,17 @@ bus@ff800000 { #size-cells = <1>; ranges = <0 0xff800000 0x800000>; + hsspi: spi@1000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "brcm,bcm6328-hsspi"; + reg = <0x1000 0x600>; + clocks = <&hsspi_pll &hsspi_pll>; + clock-names = "hsspi", "pll"; + num-cs = <8>; + status = "disabled"; + }; + uart0: serial@12000 { compatible = "arm,pl011", "arm,primecell"; reg = <0x12000 0x1000>; diff --git a/arch/arm/boot/dts/bcm947622.dts b/arch/arm/boot/dts/bcm947622.dts index 6f083724ab8e..93b8ce22678d 100644 --- a/arch/arm/boot/dts/bcm947622.dts +++ b/arch/arm/boot/dts/bcm947622.dts @@ -28,3 +28,7 @@ memory@0 { &uart0 { status = "okay"; }; + +&hsspi { + status = "okay"; +}; diff --git a/arch/arm/boot/dts/bcm963138.dts b/arch/arm/boot/dts/bcm963138.dts index d28c4f130ca2..1b405c249213 100644 --- a/arch/arm/boot/dts/bcm963138.dts +++ b/arch/arm/boot/dts/bcm963138.dts @@ -25,3 +25,7 @@ memory@0 { &serial0 { status = "okay"; }; + +&hsspi { + status = "okay"; +}; diff --git a/arch/arm/boot/dts/bcm963138dvt.dts b/arch/arm/boot/dts/bcm963138dvt.dts index 15bec75be74c..b5af61853a07 100644 --- a/arch/arm/boot/dts/bcm963138dvt.dts +++ b/arch/arm/boot/dts/bcm963138dvt.dts @@ -50,3 +50,7 @@ &ahci { &sata_phy { status = "okay"; }; + +&hsspi { + status = "okay"; +}; diff --git a/arch/arm/boot/dts/bcm963148.dts b/arch/arm/boot/dts/bcm963148.dts index 98f6a6d09f50..1f5d6d783f09 100644 --- a/arch/arm/boot/dts/bcm963148.dts +++ b/arch/arm/boot/dts/bcm963148.dts @@ -28,3 +28,7 @@ memory@0 { &uart0 { status = "okay"; }; + +&hsspi { + status = "okay"; +}; diff --git a/arch/arm/boot/dts/bcm963178.dts b/arch/arm/boot/dts/bcm963178.dts index fa096e9cde23..d036e99dd8d1 100644 --- a/arch/arm/boot/dts/bcm963178.dts +++ b/arch/arm/boot/dts/bcm963178.dts @@ -28,3 +28,7 @@ memory@0 { &uart0 { status = "okay"; }; + +&hsspi { + status = "okay"; +}; diff --git a/arch/arm/boot/dts/bcm96756.dts b/arch/arm/boot/dts/bcm96756.dts index 9a4a87ba9c8a..8b104f3fb14a 100644 --- a/arch/arm/boot/dts/bcm96756.dts +++ b/arch/arm/boot/dts/bcm96756.dts @@ -28,3 +28,7 @@ memory@0 { &uart0 { status = "okay"; }; + +&hsspi { + status = "okay"; +}; diff --git a/arch/arm/boot/dts/bcm96846.dts b/arch/arm/boot/dts/bcm96846.dts index c70ebccabc19..55852c229608 100644 --- a/arch/arm/boot/dts/bcm96846.dts +++ b/arch/arm/boot/dts/bcm96846.dts @@ -28,3 +28,7 @@ memory@0 { &uart0 { status = "okay"; }; + +&hsspi { + status = "okay"; +}; diff --git a/arch/arm/boot/dts/bcm96855.dts b/arch/arm/boot/dts/bcm96855.dts index 4438152561ac..2ad880af2104 100644 --- a/arch/arm/boot/dts/bcm96855.dts +++ b/arch/arm/boot/dts/bcm96855.dts @@ -28,3 +28,7 @@ memory@0 { &uart0 { status = "okay"; }; + +&hsspi { + status = "okay"; +}; diff --git a/arch/arm/boot/dts/bcm96878.dts b/arch/arm/boot/dts/bcm96878.dts index 8fbc175cb452..b7af8ade7a9d 100644 --- a/arch/arm/boot/dts/bcm96878.dts +++ b/arch/arm/boot/dts/bcm96878.dts @@ -28,3 +28,7 @@ memory@0 { &uart0 { status = "okay"; }; + +&hsspi { + status = "okay"; +}; From patchwork Fri Jan 6 20:07:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: William Zhang X-Patchwork-Id: 13091748 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6C94AC6379F for ; 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Fri, 6 Jan 2023 12:09:46 -0800 (PST) Received: by bcacpedev-irv-3.lvn.broadcom.net (Postfix, from userid 28376) id DDC8B101B33; Fri, 6 Jan 2023 12:09:35 -0800 (PST) From: William Zhang To: Linux SPI List , Broadcom Kernel List Cc: anand.gore@broadcom.com, tomer.yacoby@broadcom.com, dan.beygelman@broadcom.com, joel.peshkin@broadcom.com, f.fainelli@gmail.com, jonas.gorski@gmail.com, kursad.oney@broadcom.com, dregan@mail.com, William Zhang , Krzysztof Kozlowski , =?utf-8?b?UmFmYcWC?= =?utf-8?b?IE1pxYJlY2tp?= , Rob Herring , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 05/16] arm64: dts: broadcom: bcmbca: Add spi controller node Date: Fri, 6 Jan 2023 12:07:57 -0800 Message-Id: <20230106200809.330769-6-william.zhang@broadcom.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20230106200809.330769-1-william.zhang@broadcom.com> References: <20230106200809.330769-1-william.zhang@broadcom.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230106_120947_222665_46C9E3E3 X-CRM114-Status: GOOD ( 12.58 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add support for HSSPI controller in ARMv8 chip dts files. Signed-off-by: William Zhang --- .../boot/dts/broadcom/bcmbca/bcm4908.dtsi | 17 +++++++++++++++++ .../boot/dts/broadcom/bcmbca/bcm4912.dtsi | 19 +++++++++++++++++++ .../boot/dts/broadcom/bcmbca/bcm63146.dtsi | 18 ++++++++++++++++++ .../boot/dts/broadcom/bcmbca/bcm63158.dtsi | 18 ++++++++++++++++++ .../boot/dts/broadcom/bcmbca/bcm6813.dtsi | 19 +++++++++++++++++++ .../boot/dts/broadcom/bcmbca/bcm6856.dtsi | 17 +++++++++++++++++ .../boot/dts/broadcom/bcmbca/bcm6858.dtsi | 17 +++++++++++++++++ .../boot/dts/broadcom/bcmbca/bcm94908.dts | 4 ++++ .../boot/dts/broadcom/bcmbca/bcm94912.dts | 4 ++++ .../boot/dts/broadcom/bcmbca/bcm963146.dts | 4 ++++ .../boot/dts/broadcom/bcmbca/bcm963158.dts | 4 ++++ .../boot/dts/broadcom/bcmbca/bcm96813.dts | 4 ++++ .../boot/dts/broadcom/bcmbca/bcm96856.dts | 4 ++++ .../boot/dts/broadcom/bcmbca/bcm96858.dts | 4 ++++ 14 files changed, 153 insertions(+) diff --git a/arch/arm64/boot/dts/broadcom/bcmbca/bcm4908.dtsi b/arch/arm64/boot/dts/broadcom/bcmbca/bcm4908.dtsi index eb2a78f4e033..169045215d91 100644 --- a/arch/arm64/boot/dts/broadcom/bcmbca/bcm4908.dtsi +++ b/arch/arm64/boot/dts/broadcom/bcmbca/bcm4908.dtsi @@ -107,6 +107,12 @@ periph_clk: periph_clk { clock-frequency = <50000000>; clock-output-names = "periph"; }; + + hsspi_pll: hsspi-pll { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <400000000>; + }; }; soc { @@ -531,6 +537,17 @@ leds: leds@800 { #size-cells = <0>; }; + hsspi: spi@1000{ + #address-cells = <1>; + #size-cells = <0>; + compatible = "brcm,bcm6328-hsspi"; + reg = <0x1000 0x600>; + clocks = <&hsspi_pll &hsspi_pll>; + clock-names = "hsspi", "pll"; + num-cs = <8>; + status = "disabled"; + }; + nand-controller@1800 { #address-cells = <1>; #size-cells = <0>; diff --git a/arch/arm64/boot/dts/broadcom/bcmbca/bcm4912.dtsi b/arch/arm64/boot/dts/broadcom/bcmbca/bcm4912.dtsi index d5bc31980f03..ebacfffc4264 100644 --- a/arch/arm64/boot/dts/broadcom/bcmbca/bcm4912.dtsi +++ b/arch/arm64/boot/dts/broadcom/bcmbca/bcm4912.dtsi @@ -79,6 +79,7 @@ periph_clk: periph-clk { #clock-cells = <0>; clock-frequency = <200000000>; }; + uart_clk: uart-clk { compatible = "fixed-factor-clock"; #clock-cells = <0>; @@ -86,6 +87,12 @@ uart_clk: uart-clk { clock-div = <4>; clock-mult = <1>; }; + + hsspi_pll: hsspi-pll { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <200000000>; + }; }; psci { @@ -117,6 +124,18 @@ bus@ff800000 { #size-cells = <1>; ranges = <0x0 0x0 0xff800000 0x800000>; + hsspi: spi@1000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "brcm,bcmbca-hsspi"; + reg = <0x1000 0x600>, <0x2610 0x4>; + reg-names = "hsspi", "spim-ctrl"; + clocks = <&hsspi_pll &hsspi_pll>; + clock-names = "hsspi", "pll"; + num-cs = <8>; + status = "disabled"; + }; + uart0: serial@12000 { compatible = "arm,pl011", "arm,primecell"; reg = <0x12000 0x1000>; diff --git a/arch/arm64/boot/dts/broadcom/bcmbca/bcm63146.dtsi b/arch/arm64/boot/dts/broadcom/bcmbca/bcm63146.dtsi index 6f805266d3c9..184f8975d8f2 100644 --- a/arch/arm64/boot/dts/broadcom/bcmbca/bcm63146.dtsi +++ b/arch/arm64/boot/dts/broadcom/bcmbca/bcm63146.dtsi @@ -60,6 +60,7 @@ periph_clk: periph-clk { #clock-cells = <0>; clock-frequency = <200000000>; }; + uart_clk: uart-clk { compatible = "fixed-factor-clock"; #clock-cells = <0>; @@ -67,6 +68,12 @@ uart_clk: uart-clk { clock-div = <4>; clock-mult = <1>; }; + + hsspi_pll: hsspi-pll { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <200000000>; + }; }; psci { @@ -99,6 +106,17 @@ bus@ff800000 { #size-cells = <1>; ranges = <0x0 0x0 0xff800000 0x800000>; + hsspi: spi@1000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "brcm,bcm6328-hsspi"; + reg = <0x1000 0x600>; + clocks = <&hsspi_pll &hsspi_pll>; + clock-names = "hsspi", "pll"; + num-cs = <8>; + status = "disabled"; + }; + uart0: serial@12000 { compatible = "arm,pl011", "arm,primecell"; reg = <0x12000 0x1000>; diff --git a/arch/arm64/boot/dts/broadcom/bcmbca/bcm63158.dtsi b/arch/arm64/boot/dts/broadcom/bcmbca/bcm63158.dtsi index b982249b80a2..4036ddc3c833 100644 --- a/arch/arm64/boot/dts/broadcom/bcmbca/bcm63158.dtsi +++ b/arch/arm64/boot/dts/broadcom/bcmbca/bcm63158.dtsi @@ -79,6 +79,7 @@ periph_clk: periph-clk { #clock-cells = <0>; clock-frequency = <200000000>; }; + uart_clk: uart-clk { compatible = "fixed-factor-clock"; #clock-cells = <0>; @@ -86,6 +87,12 @@ uart_clk: uart-clk { clock-div = <4>; clock-mult = <1>; }; + + hsspi_pll: hsspi-pll { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <400000000>; + }; }; psci { @@ -117,6 +124,17 @@ bus@ff800000 { #size-cells = <1>; ranges = <0x0 0x0 0xff800000 0x800000>; + hsspi: spi@1000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "brcm,bcm6328-hsspi"; + reg = <0x1000 0x600>; + clocks = <&hsspi_pll &hsspi_pll>; + clock-names = "hsspi", "pll"; + num-cs = <8>; + status = "disabled"; + }; + uart0: serial@12000 { compatible = "arm,pl011", "arm,primecell"; reg = <0x12000 0x1000>; diff --git a/arch/arm64/boot/dts/broadcom/bcmbca/bcm6813.dtsi b/arch/arm64/boot/dts/broadcom/bcmbca/bcm6813.dtsi index a996d436e977..d29738e6fd67 100644 --- a/arch/arm64/boot/dts/broadcom/bcmbca/bcm6813.dtsi +++ b/arch/arm64/boot/dts/broadcom/bcmbca/bcm6813.dtsi @@ -79,6 +79,7 @@ periph_clk: periph-clk { #clock-cells = <0>; clock-frequency = <200000000>; }; + uart_clk: uart-clk { compatible = "fixed-factor-clock"; #clock-cells = <0>; @@ -86,6 +87,12 @@ uart_clk: uart-clk { clock-div = <4>; clock-mult = <1>; }; + + hsspi_pll: hsspi-pll { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <200000000>; + }; }; psci { @@ -117,6 +124,18 @@ bus@ff800000 { #size-cells = <1>; ranges = <0x0 0x0 0xff800000 0x800000>; + hsspi: spi@1000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "brcm,bcmbca-hsspi"; + reg = <0x1000 0x600>, <0x2610 0x4>; + reg-names = "hsspi", "spim-ctrl"; + clocks = <&hsspi_pll &hsspi_pll>; + clock-names = "hsspi", "pll"; + num-cs = <8>; + status = "disabled"; + }; + uart0: serial@12000 { compatible = "arm,pl011", "arm,primecell"; reg = <0x12000 0x1000>; diff --git a/arch/arm64/boot/dts/broadcom/bcmbca/bcm6856.dtsi b/arch/arm64/boot/dts/broadcom/bcmbca/bcm6856.dtsi index 62c530d4b103..6c5faf175551 100644 --- a/arch/arm64/boot/dts/broadcom/bcmbca/bcm6856.dtsi +++ b/arch/arm64/boot/dts/broadcom/bcmbca/bcm6856.dtsi @@ -60,6 +60,12 @@ periph_clk:periph-clk { #clock-cells = <0>; clock-frequency = <200000000>; }; + + hsspi_pll: hsspi-pll { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <400000000>; + }; }; psci { @@ -100,5 +106,16 @@ uart0: serial@640 { clock-names = "refclk"; status = "disabled"; }; + + hsspi: spi@1000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "brcm,bcm6328-hsspi"; + reg = <0x1000 0x600>; + clocks = <&hsspi_pll &hsspi_pll>; + clock-names = "hsspi", "pll"; + num-cs = <8>; + status = "disabled"; + }; }; }; diff --git a/arch/arm64/boot/dts/broadcom/bcmbca/bcm6858.dtsi b/arch/arm64/boot/dts/broadcom/bcmbca/bcm6858.dtsi index 34c7b513d363..edc0003457fd 100644 --- a/arch/arm64/boot/dts/broadcom/bcmbca/bcm6858.dtsi +++ b/arch/arm64/boot/dts/broadcom/bcmbca/bcm6858.dtsi @@ -78,6 +78,12 @@ periph_clk:periph-clk { #clock-cells = <0>; clock-frequency = <200000000>; }; + + hsspi_pll: hsspi-pll { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <400000000>; + }; }; psci { @@ -137,5 +143,16 @@ uart0: serial@640 { clock-names = "refclk"; status = "disabled"; }; + + hsspi: spi@1000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "brcm,bcm6328-hsspi"; + reg = <0x1000 0x600>; + clocks = <&hsspi_pll &hsspi_pll>; + clock-names = "hsspi", "pll"; + num-cs = <8>; + status = "disabled"; + }; }; }; diff --git a/arch/arm64/boot/dts/broadcom/bcmbca/bcm94908.dts b/arch/arm64/boot/dts/broadcom/bcmbca/bcm94908.dts index fcbd3c430ace..c4e6e71f6310 100644 --- a/arch/arm64/boot/dts/broadcom/bcmbca/bcm94908.dts +++ b/arch/arm64/boot/dts/broadcom/bcmbca/bcm94908.dts @@ -28,3 +28,7 @@ memory@0 { &uart0 { status = "okay"; }; + +&hsspi { + status = "okay"; +}; diff --git a/arch/arm64/boot/dts/broadcom/bcmbca/bcm94912.dts b/arch/arm64/boot/dts/broadcom/bcmbca/bcm94912.dts index a3623e6f6919..e69cd683211a 100644 --- a/arch/arm64/boot/dts/broadcom/bcmbca/bcm94912.dts +++ b/arch/arm64/boot/dts/broadcom/bcmbca/bcm94912.dts @@ -28,3 +28,7 @@ memory@0 { &uart0 { status = "okay"; }; + +&hsspi { + status = "okay"; +}; diff --git a/arch/arm64/boot/dts/broadcom/bcmbca/bcm963146.dts b/arch/arm64/boot/dts/broadcom/bcmbca/bcm963146.dts index e39f1e6d4774..db2c82d6dfd8 100644 --- a/arch/arm64/boot/dts/broadcom/bcmbca/bcm963146.dts +++ b/arch/arm64/boot/dts/broadcom/bcmbca/bcm963146.dts @@ -28,3 +28,7 @@ memory@0 { &uart0 { status = "okay"; }; + +&hsspi { + status = "okay"; +}; diff --git a/arch/arm64/boot/dts/broadcom/bcmbca/bcm963158.dts b/arch/arm64/boot/dts/broadcom/bcmbca/bcm963158.dts index eba07e0b1ca6..25c12bc63545 100644 --- a/arch/arm64/boot/dts/broadcom/bcmbca/bcm963158.dts +++ b/arch/arm64/boot/dts/broadcom/bcmbca/bcm963158.dts @@ -28,3 +28,7 @@ memory@0 { &uart0 { status = "okay"; }; + +&hsspi { + status = "okay"; +}; diff --git a/arch/arm64/boot/dts/broadcom/bcmbca/bcm96813.dts b/arch/arm64/boot/dts/broadcom/bcmbca/bcm96813.dts index af17091ae764..faba21f03120 100644 --- a/arch/arm64/boot/dts/broadcom/bcmbca/bcm96813.dts +++ b/arch/arm64/boot/dts/broadcom/bcmbca/bcm96813.dts @@ -28,3 +28,7 @@ memory@0 { &uart0 { status = "okay"; }; + +&hsspi { + status = "okay"; +}; diff --git a/arch/arm64/boot/dts/broadcom/bcmbca/bcm96856.dts b/arch/arm64/boot/dts/broadcom/bcmbca/bcm96856.dts index 032aeb75c983..9808331eede2 100644 --- a/arch/arm64/boot/dts/broadcom/bcmbca/bcm96856.dts +++ b/arch/arm64/boot/dts/broadcom/bcmbca/bcm96856.dts @@ -28,3 +28,7 @@ memory@0 { &uart0 { status = "okay"; }; + +&hsspi { + status = "okay"; +}; diff --git a/arch/arm64/boot/dts/broadcom/bcmbca/bcm96858.dts b/arch/arm64/boot/dts/broadcom/bcmbca/bcm96858.dts index 0cbf582f5d54..1f561c8e13b0 100644 --- a/arch/arm64/boot/dts/broadcom/bcmbca/bcm96858.dts +++ b/arch/arm64/boot/dts/broadcom/bcmbca/bcm96858.dts @@ -28,3 +28,7 @@ memory@0 { &uart0 { status = "okay"; }; + +&hsspi { + status = "okay"; +}; From patchwork Fri Jan 6 20:08:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: William Zhang X-Patchwork-Id: 13091756 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A7315C54EBD for ; Fri, 6 Jan 2023 20:11:40 +0000 (UTC) DKIM-Signature: v=1; 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Fri, 6 Jan 2023 12:10:22 -0800 (PST) From: William Zhang To: Linux SPI List , Broadcom Kernel List Cc: anand.gore@broadcom.com, tomer.yacoby@broadcom.com, dan.beygelman@broadcom.com, joel.peshkin@broadcom.com, f.fainelli@gmail.com, jonas.gorski@gmail.com, kursad.oney@broadcom.com, dregan@mail.com, William Zhang , Mark Brown , =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 15/16] spi: bcmbca-hsspi: Add driver for newer HSSPI controller Date: Fri, 6 Jan 2023 12:08:07 -0800 Message-Id: <20230106200809.330769-16-william.zhang@broadcom.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20230106200809.330769-1-william.zhang@broadcom.com> References: <20230106200809.330769-1-william.zhang@broadcom.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230106_121032_761193_534C7229 X-CRM114-Status: GOOD ( 31.51 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The newer BCMBCA SoCs such as BCM6756, BCM4912 and BCM6855 include an updated SPI controller that add the capability to allow the driver to control chip select explicitly. Driver can control and keep cs low between the transfers natively. Hence the dummy cs workaround or prepend mode found in the bcm63xx-hsspi driver are no longer needed and this new driver is much cleaner. The BCMBCA chips containing this controller use a new compatible string brcm,bcmbca-hsspi and are set accordingly in the chip dtsi file in dts patch from this series. Signed-off-by: William Zhang --- drivers/spi/Kconfig | 9 + drivers/spi/Makefile | 1 + drivers/spi/spi-bcmbca-hsspi.c | 629 +++++++++++++++++++++++++++++++++ 3 files changed, 639 insertions(+) create mode 100644 drivers/spi/spi-bcmbca-hsspi.c diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 3b1c0878bb85..771244582d03 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -199,6 +199,15 @@ config SPI_BCM_QSPI based platforms. This driver works for both SPI master for SPI NOR flash device as well as MSPI device. +config SPI_BCMBCA_HSSPI + tristate "Broadcom BCMBCA HS SPI controller driver" + depends on ARCH_BCMBCA || COMPILE_TEST + help + This enables support for the High Speed SPI controller present on + newer Broadcom BCMBCA SoCs. These SoCs include an updated SPI controller + that adds the capability to allow the driver to control chip select + explicitly. + config SPI_BITBANG tristate "Utilities for Bitbanging SPI masters" help diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile index be9ba40ef8d0..fe92106447c3 100644 --- a/drivers/spi/Makefile +++ b/drivers/spi/Makefile @@ -30,6 +30,7 @@ obj-$(CONFIG_SPI_BCM2835) += spi-bcm2835.o obj-$(CONFIG_SPI_BCM2835AUX) += spi-bcm2835aux.o obj-$(CONFIG_SPI_BCM63XX) += spi-bcm63xx.o obj-$(CONFIG_SPI_BCM63XX_HSSPI) += spi-bcm63xx-hsspi.o +obj-$(CONFIG_SPI_BCMBCA_HSSPI) += spi-bcmbca-hsspi.o obj-$(CONFIG_SPI_BCM_QSPI) += spi-iproc-qspi.o spi-brcmstb-qspi.o spi-bcm-qspi.o obj-$(CONFIG_SPI_BITBANG) += spi-bitbang.o obj-$(CONFIG_SPI_BUTTERFLY) += spi-butterfly.o diff --git a/drivers/spi/spi-bcmbca-hsspi.c b/drivers/spi/spi-bcmbca-hsspi.c new file mode 100644 index 000000000000..7523f0e9513c --- /dev/null +++ b/drivers/spi/spi-bcmbca-hsspi.c @@ -0,0 +1,629 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Broadcom BCMBCA High Speed SPI Controller driver + * + * Copyright 2000-2010 Broadcom Corporation + * Copyright 2012-2013 Jonas Gorski + * Copyright 2019-2022 Broadcom Ltd + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Broadcom Legacy SPI device driver flags */ +#define SPIDEV_CONTROLLER_STATE_SET BIT(31) +#define SPIDEV_CONTROLLER_STATE_GATE_CLK_SSOFF BIT(29) + +#define spidev_ctrl_data(spi) \ + ((u32)((uintptr_t)(spi)->controller_data)) + +#define HSSPI_GLOBAL_CTRL_REG 0x0 +#define GLOBAL_CTRL_CS_POLARITY_SHIFT 0 +#define GLOBAL_CTRL_CS_POLARITY_MASK 0x000000ff +#define GLOBAL_CTRL_PLL_CLK_CTRL_SHIFT 8 +#define GLOBAL_CTRL_PLL_CLK_CTRL_MASK 0x0000ff00 +#define GLOBAL_CTRL_CLK_GATE_SSOFF BIT(16) +#define GLOBAL_CTRL_CLK_POLARITY BIT(17) +#define GLOBAL_CTRL_MOSI_IDLE BIT(18) + +#define HSSPI_GLOBAL_EXT_TRIGGER_REG 0x4 + +#define HSSPI_INT_STATUS_REG 0x8 +#define HSSPI_INT_STATUS_MASKED_REG 0xc +#define HSSPI_INT_MASK_REG 0x10 + +#define HSSPI_PINGx_CMD_DONE(i) BIT((i * 8) + 0) +#define HSSPI_PINGx_RX_OVER(i) BIT((i * 8) + 1) +#define HSSPI_PINGx_TX_UNDER(i) BIT((i * 8) + 2) +#define HSSPI_PINGx_POLL_TIMEOUT(i) BIT((i * 8) + 3) +#define HSSPI_PINGx_CTRL_INVAL(i) BIT((i * 8) + 4) + +#define HSSPI_INT_CLEAR_ALL 0xff001f1f + +#define HSSPI_PINGPONG_COMMAND_REG(x) (0x80 + (x) * 0x40) +#define PINGPONG_CMD_COMMAND_MASK 0xf +#define PINGPONG_COMMAND_NOOP 0 +#define PINGPONG_COMMAND_START_NOW 1 +#define PINGPONG_COMMAND_START_TRIGGER 2 +#define PINGPONG_COMMAND_HALT 3 +#define PINGPONG_COMMAND_FLUSH 4 +#define PINGPONG_CMD_PROFILE_SHIFT 8 +#define PINGPONG_CMD_SS_SHIFT 12 + +#define HSSPI_PINGPONG_STATUS_REG(x) (0x84 + (x) * 0x40) +#define HSSPI_PINGPONG_STATUS_SRC_BUSY BIT(1) + +#define HSSPI_PROFILE_CLK_CTRL_REG(x) (0x100 + (x) * 0x20) +#define CLK_CTRL_FREQ_CTRL_MASK 0x0000ffff +#define CLK_CTRL_SPI_CLK_2X_SEL BIT(14) +#define CLK_CTRL_ACCUM_RST_ON_LOOP BIT(15) +#define CLK_CTRL_CLK_POLARITY BIT(16) + +#define HSSPI_PROFILE_SIGNAL_CTRL_REG(x) (0x104 + (x) * 0x20) +#define SIGNAL_CTRL_LATCH_RISING BIT(12) +#define SIGNAL_CTRL_LAUNCH_RISING BIT(13) +#define SIGNAL_CTRL_ASYNC_INPUT_PATH BIT(16) + +#define HSSPI_PROFILE_MODE_CTRL_REG(x) (0x108 + (x) * 0x20) +#define MODE_CTRL_MULTIDATA_RD_STRT_SHIFT 8 +#define MODE_CTRL_MULTIDATA_WR_STRT_SHIFT 12 +#define MODE_CTRL_MULTIDATA_RD_SIZE_SHIFT 16 +#define MODE_CTRL_MULTIDATA_WR_SIZE_SHIFT 18 +#define MODE_CTRL_MODE_3WIRE BIT(20) +#define MODE_CTRL_PREPENDBYTE_CNT_SHIFT 24 + +#define HSSPI_FIFO_REG(x) (0x200 + (x) * 0x200) + +#define HSSPI_OP_MULTIBIT BIT(11) +#define HSSPI_OP_CODE_SHIFT 13 +#define HSSPI_OP_SLEEP (0 << HSSPI_OP_CODE_SHIFT) +#define HSSPI_OP_READ_WRITE (1 << HSSPI_OP_CODE_SHIFT) +#define HSSPI_OP_WRITE (2 << HSSPI_OP_CODE_SHIFT) +#define HSSPI_OP_READ (3 << HSSPI_OP_CODE_SHIFT) +#define HSSPI_OP_SETIRQ (4 << HSSPI_OP_CODE_SHIFT) + +#define HSSPI_BUFFER_LEN 512 +#define HSSPI_OPCODE_LEN 2 + +#define HSSPI_MAX_PREPEND_LEN 15 + +#define HSSPI_MAX_SYNC_CLOCK 30000000 + +#define HSSPI_SPI_MAX_CS 8 +#define HSSPI_BUS_NUM 1 /* 0 is legacy SPI */ +#define HSSPI_POLL_STATUS_TIMEOUT_MS 100 + +#define SPIM_CTRL_CS_OVERRIDE_SEL_SHIFT 0 +#define SPIM_CTRL_CS_OVERRIDE_SEL_MASK 0xff +#define SPIM_CTRL_CS_OVERRIDE_VAL_SHIFT 8 +#define SPIM_CTRL_CS_OVERRIDE_VAL_MASK 0xff + +struct bcmbca_hsspi { + struct completion done; + struct mutex bus_mutex; + struct platform_device *pdev; + struct clk *clk; + struct clk *pll_clk; + void __iomem *regs; + void __iomem *spim_ctrl; + u8 __iomem *fifo; + u32 speed_hz; + u8 cs_polarity; + int irq; +}; + + +static void bcmbca_hsspi_set_clk(struct bcmbca_hsspi *bs, + struct spi_device *spi, int hz); + +static inline int bcmbca_hsspi_dev_no_clk_gate(struct spi_device *spi) +{ + u32 ctrl_data = 0; + + /* check spi device dn first */ + if (of_property_read_bool(spi->dev.of_node, "brcm,no-clk-gate")) + return 1; + + /* check spi dev controller data for legacy device support */ + ctrl_data = spidev_ctrl_data(spi); + return ((ctrl_data & SPIDEV_CONTROLLER_STATE_SET) && + !(ctrl_data & SPIDEV_CONTROLLER_STATE_GATE_CLK_SSOFF)); +} + +static void bcmbca_hsspi_restore_clk_gate(struct bcmbca_hsspi *bs, + struct spi_device *spi) +{ + u32 reg = 0; + + /* check if clk gate setting was previously turned off */ + if (bcmbca_hsspi_dev_no_clk_gate(spi)) { + mutex_lock(&bs->bus_mutex); + reg = __raw_readl(bs->regs + HSSPI_GLOBAL_CTRL_REG); + reg |= GLOBAL_CTRL_CLK_GATE_SSOFF; + __raw_writel(reg, bs->regs + HSSPI_GLOBAL_CTRL_REG); + mutex_unlock(&bs->bus_mutex); + } +} + +static void bcmbca_hsspi_set_cs(struct bcmbca_hsspi *bs, unsigned int cs, + bool active) +{ + u32 reg; + + /* No cs orerriden needed for SS7 internal cs on pcm based voice dev */ + if (cs == 7) + return; + + mutex_lock(&bs->bus_mutex); + + if (active) { + /* activate cs by setting the override bit and active value bit*/ + reg = __raw_readl(bs->spim_ctrl); + reg |= BIT(cs+SPIM_CTRL_CS_OVERRIDE_SEL_SHIFT); + reg &= ~BIT(cs+SPIM_CTRL_CS_OVERRIDE_VAL_SHIFT); + if (bs->cs_polarity & BIT(cs)) + reg |= BIT(cs+SPIM_CTRL_CS_OVERRIDE_VAL_SHIFT); + __raw_writel(reg, bs->spim_ctrl); + } else { + /* clear the cs override bit */ + reg = __raw_readl(bs->spim_ctrl); + reg &= ~BIT(cs+SPIM_CTRL_CS_OVERRIDE_SEL_SHIFT); + __raw_writel(reg, bs->spim_ctrl); + } + + mutex_unlock(&bs->bus_mutex); +} + +static void bcmbca_hsspi_set_clk(struct bcmbca_hsspi *bs, + struct spi_device *spi, int hz) +{ + unsigned int profile = spi->chip_select; + u32 reg; + + reg = DIV_ROUND_UP(2048, DIV_ROUND_UP(bs->speed_hz, hz)); + __raw_writel(CLK_CTRL_ACCUM_RST_ON_LOOP | reg, + bs->regs + HSSPI_PROFILE_CLK_CTRL_REG(profile)); + + reg = __raw_readl(bs->regs + HSSPI_PROFILE_SIGNAL_CTRL_REG(profile)); + if (hz > HSSPI_MAX_SYNC_CLOCK) + reg |= SIGNAL_CTRL_ASYNC_INPUT_PATH; + else + reg &= ~SIGNAL_CTRL_ASYNC_INPUT_PATH; + __raw_writel(reg, bs->regs + HSSPI_PROFILE_SIGNAL_CTRL_REG(profile)); + + mutex_lock(&bs->bus_mutex); + /* setup clock polarity */ + reg = __raw_readl(bs->regs + HSSPI_GLOBAL_CTRL_REG); + reg &= ~GLOBAL_CTRL_CLK_POLARITY; + if (spi->mode & SPI_CPOL) + reg |= GLOBAL_CTRL_CLK_POLARITY; + + if (bcmbca_hsspi_dev_no_clk_gate(spi)) + reg &= ~GLOBAL_CTRL_CLK_GATE_SSOFF; + else + reg |= GLOBAL_CTRL_CLK_GATE_SSOFF; + + __raw_writel(reg, bs->regs + HSSPI_GLOBAL_CTRL_REG); + + mutex_unlock(&bs->bus_mutex); +} + +static int bcmbca_hsspi_wait_cmd(struct bcmbca_hsspi *bs, unsigned int cs) +{ + unsigned long limit; + u32 reg = 0; + int rc = 0; + + if (bs->irq > 0) { + if (wait_for_completion_timeout(&bs->done, HZ) == 0) + rc = 1; + } else { + limit = jiffies + msecs_to_jiffies(HSSPI_POLL_STATUS_TIMEOUT_MS); + + while (!time_after(jiffies, limit)) { + reg = __raw_readl(bs->regs + HSSPI_PINGPONG_STATUS_REG(0)); + if (reg & HSSPI_PINGPONG_STATUS_SRC_BUSY) + cpu_relax(); + else + break; + } + if (reg & HSSPI_PINGPONG_STATUS_SRC_BUSY) + rc = 1; + } + + if (rc) { + dev_err(&bs->pdev->dev, "transfer timed out!\n"); + bcmbca_hsspi_set_cs(bs, cs, false); + } + + return rc; +} + +static int bcmbca_hsspi_do_txrx(struct spi_device *spi, struct spi_transfer *t, + struct spi_message *msg) +{ + struct bcmbca_hsspi *bs = spi_master_get_devdata(spi->master); + unsigned int chip_select = spi->chip_select; + u16 opcode = 0; + int pending = t->len; + int step_size = HSSPI_BUFFER_LEN; + const u8 *tx = t->tx_buf; + u8 *rx = t->rx_buf; + u32 reg = 0, cs_act = 0; + + bcmbca_hsspi_set_clk(bs, spi, t->speed_hz); + + if (tx && rx) + opcode = HSSPI_OP_READ_WRITE; + else if (tx) + opcode = HSSPI_OP_WRITE; + else if (rx) + opcode = HSSPI_OP_READ; + + if (opcode != HSSPI_OP_READ) + step_size -= HSSPI_OPCODE_LEN; + + if ((opcode == HSSPI_OP_READ && t->rx_nbits == SPI_NBITS_DUAL) || + (opcode == HSSPI_OP_WRITE && t->tx_nbits == SPI_NBITS_DUAL)) { + opcode |= HSSPI_OP_MULTIBIT; + + if (t->rx_nbits == SPI_NBITS_DUAL) + reg |= 1 << MODE_CTRL_MULTIDATA_RD_SIZE_SHIFT; + if (t->tx_nbits == SPI_NBITS_DUAL) + reg |= 1 << MODE_CTRL_MULTIDATA_WR_SIZE_SHIFT; + } + + __raw_writel(reg | 0xff, + bs->regs + HSSPI_PROFILE_MODE_CTRL_REG(chip_select)); + + while (pending > 0) { + int curr_step = min_t(int, step_size, pending); + + reinit_completion(&bs->done); + if (tx) { + memcpy_toio(bs->fifo + HSSPI_OPCODE_LEN, tx, curr_step); + tx += curr_step; + } + __raw_writew(cpu_to_be16(opcode | curr_step), bs->fifo); + + /* enable interrupt */ + if (bs->irq > 0) + __raw_writel(HSSPI_PINGx_CMD_DONE(0), + bs->regs + HSSPI_INT_MASK_REG); + + if (!cs_act) { + bcmbca_hsspi_set_cs(bs, chip_select, true); + cs_act = 1; + } + reg = chip_select << PINGPONG_CMD_SS_SHIFT | + chip_select << PINGPONG_CMD_PROFILE_SHIFT | + PINGPONG_COMMAND_START_NOW; + __raw_writel(reg, bs->regs + HSSPI_PINGPONG_COMMAND_REG(0)); + + if (bcmbca_hsspi_wait_cmd(bs, spi->chip_select)) + return -ETIMEDOUT; + + pending -= curr_step; + if (pending == 0) { + if (list_is_last(&t->transfer_list, &msg->transfers)) { + if (!t->cs_change) + bcmbca_hsspi_set_cs(bs, spi->chip_select, false); + } else { + if (t->cs_change) { + bcmbca_hsspi_set_cs(bs, spi->chip_select, false); + udelay(10); + bcmbca_hsspi_set_cs(bs, spi->chip_select, true); + } + } + } + if (rx) { + memcpy_fromio(rx, bs->fifo, curr_step); + rx += curr_step; + } + } + + return 0; +} + +static int bcmbca_hsspi_setup(struct spi_device *spi) +{ + struct bcmbca_hsspi *bs = spi_master_get_devdata(spi->master); + u32 reg; + + reg = __raw_readl(bs->regs + + HSSPI_PROFILE_SIGNAL_CTRL_REG(spi->chip_select)); + reg &= ~(SIGNAL_CTRL_LAUNCH_RISING | SIGNAL_CTRL_LATCH_RISING); + if (spi->mode & SPI_CPHA) + reg |= SIGNAL_CTRL_LAUNCH_RISING; + else + reg |= SIGNAL_CTRL_LATCH_RISING; + __raw_writel(reg, bs->regs + + HSSPI_PROFILE_SIGNAL_CTRL_REG(spi->chip_select)); + + mutex_lock(&bs->bus_mutex); + reg = __raw_readl(bs->regs + HSSPI_GLOBAL_CTRL_REG); + + if (spi->mode & SPI_CS_HIGH) + reg |= BIT(spi->chip_select); + else + reg &= ~BIT(spi->chip_select); + __raw_writel(reg, bs->regs + HSSPI_GLOBAL_CTRL_REG); + + if (spi->mode & SPI_CS_HIGH) + bs->cs_polarity |= BIT(spi->chip_select); + else + bs->cs_polarity &= ~BIT(spi->chip_select); + + mutex_unlock(&bs->bus_mutex); + + return 0; +} + +static int bcmbca_hsspi_transfer_one(struct spi_master *master, + struct spi_message *msg) +{ + struct bcmbca_hsspi *bs = spi_master_get_devdata(master); + struct spi_transfer *t; + struct spi_device *spi = msg->spi; + int status = -EINVAL; + + list_for_each_entry(t, &msg->transfers, transfer_list) { + status = bcmbca_hsspi_do_txrx(spi, t, msg); + if (status) + break; + + msg->actual_length += t->len; + + spi_transfer_delay_exec(t); + } + + /* restore the default clk gate setting in case spidev turn it off */ + bcmbca_hsspi_restore_clk_gate(bs, spi); + + msg->status = status; + spi_finalize_current_message(master); + + return 0; +} + +static irqreturn_t bcmbca_hsspi_interrupt(int irq, void *dev_id) +{ + struct bcmbca_hsspi *bs = (struct bcmbca_hsspi *)dev_id; + + if (__raw_readl(bs->regs + HSSPI_INT_STATUS_MASKED_REG) == 0) + return IRQ_NONE; + + __raw_writel(HSSPI_INT_CLEAR_ALL, bs->regs + HSSPI_INT_STATUS_REG); + __raw_writel(0, bs->regs + HSSPI_INT_MASK_REG); + + complete(&bs->done); + + return IRQ_HANDLED; +} + +static int bcmbca_hsspi_probe(struct platform_device *pdev) +{ + struct spi_master *master; + struct bcmbca_hsspi *bs; + struct resource *res_mem; + void __iomem *spim_ctrl; + void __iomem *regs; + struct device *dev = &pdev->dev; + struct clk *clk, *pll_clk = NULL; + int irq, ret; + u32 reg, rate, num_cs = HSSPI_SPI_MAX_CS; + + irq = platform_get_irq_optional(pdev, 0); + if (irq < 0 && irq != -ENXIO) + return irq; + + res_mem = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hsspi"); + if (!res_mem) + return -EINVAL; + regs = devm_ioremap_resource(dev, res_mem); + if (IS_ERR(regs)) + return PTR_ERR(regs); + + res_mem = platform_get_resource_byname(pdev, IORESOURCE_MEM, "spim-ctrl"); + if (!res_mem) + return -EINVAL; + spim_ctrl = devm_ioremap_resource(dev, res_mem); + if (IS_ERR(spim_ctrl)) + return PTR_ERR(spim_ctrl); + + clk = devm_clk_get(dev, "hsspi"); + if (IS_ERR(clk)) + return PTR_ERR(clk); + + ret = clk_prepare_enable(clk); + if (ret) + return ret; + + rate = clk_get_rate(clk); + if (!rate) { + pll_clk = devm_clk_get(dev, "pll"); + + if (IS_ERR(pll_clk)) { + ret = PTR_ERR(pll_clk); + goto out_disable_clk; + } + + ret = clk_prepare_enable(pll_clk); + if (ret) + goto out_disable_clk; + + rate = clk_get_rate(pll_clk); + if (!rate) { + ret = -EINVAL; + goto out_disable_pll_clk; + } + } + + master = spi_alloc_master(&pdev->dev, sizeof(*bs)); + if (!master) { + ret = -ENOMEM; + goto out_disable_pll_clk; + } + + bs = spi_master_get_devdata(master); + bs->pdev = pdev; + bs->clk = clk; + bs->pll_clk = pll_clk; + bs->regs = regs; + bs->spim_ctrl = spim_ctrl; + bs->speed_hz = rate; + bs->fifo = (u8 __iomem *) (bs->regs + HSSPI_FIFO_REG(0)); + bs->irq = irq; + + mutex_init(&bs->bus_mutex); + init_completion(&bs->done); + + master->dev.of_node = dev->of_node; + if (!dev->of_node) + master->bus_num = HSSPI_BUS_NUM; + + of_property_read_u32(dev->of_node, "num-cs", &num_cs); + if (num_cs > 8) { + dev_warn(dev, "unsupported number of cs (%i), reducing to 8\n", + num_cs); + num_cs = HSSPI_SPI_MAX_CS; + } + master->num_chipselect = num_cs; + master->setup = bcmbca_hsspi_setup; + master->transfer_one_message = bcmbca_hsspi_transfer_one; + master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | + SPI_RX_DUAL | SPI_TX_DUAL; + master->bits_per_word_mask = SPI_BPW_MASK(8); + master->auto_runtime_pm = true; + + platform_set_drvdata(pdev, master); + + /* Initialize the hardware */ + __raw_writel(0, bs->regs + HSSPI_INT_MASK_REG); + + /* clean up any pending interrupts */ + __raw_writel(HSSPI_INT_CLEAR_ALL, bs->regs + HSSPI_INT_STATUS_REG); + + /* read out default CS polarities */ + reg = __raw_readl(bs->regs + HSSPI_GLOBAL_CTRL_REG); + bs->cs_polarity = reg & GLOBAL_CTRL_CS_POLARITY_MASK; + __raw_writel(reg | GLOBAL_CTRL_CLK_GATE_SSOFF, + bs->regs + HSSPI_GLOBAL_CTRL_REG); + + if (bs->irq > 0) { + ret = devm_request_irq(dev, irq, bcmbca_hsspi_interrupt, IRQF_SHARED, + pdev->name, bs); + if (ret) + goto out_put_master; + } + + pm_runtime_enable(&pdev->dev); + + /* register and we are done */ + ret = devm_spi_register_master(dev, master); + if (ret) + goto out_pm_disable; + + dev_info(dev, "Broadcom BCMBCA High Speed SPI Controller driver"); + + return 0; + +out_pm_disable: + pm_runtime_disable(&pdev->dev); +out_put_master: + spi_master_put(master); +out_disable_pll_clk: + clk_disable_unprepare(pll_clk); +out_disable_clk: + clk_disable_unprepare(clk); + return ret; +} + +static int bcmbca_hsspi_remove(struct platform_device *pdev) +{ + struct spi_master *master = platform_get_drvdata(pdev); + struct bcmbca_hsspi *bs = spi_master_get_devdata(master); + + /* reset the hardware and block queue progress */ + __raw_writel(0, bs->regs + HSSPI_INT_MASK_REG); + clk_disable_unprepare(bs->pll_clk); + clk_disable_unprepare(bs->clk); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int bcmbca_hsspi_suspend(struct device *dev) +{ + struct spi_master *master = dev_get_drvdata(dev); + struct bcmbca_hsspi *bs = spi_master_get_devdata(master); + + spi_master_suspend(master); + clk_disable_unprepare(bs->pll_clk); + clk_disable_unprepare(bs->clk); + + return 0; +} + +static int bcmbca_hsspi_resume(struct device *dev) +{ + struct spi_master *master = dev_get_drvdata(dev); + struct bcmbca_hsspi *bs = spi_master_get_devdata(master); + int ret; + + ret = clk_prepare_enable(bs->clk); + if (ret) + return ret; + + if (bs->pll_clk) { + ret = clk_prepare_enable(bs->pll_clk); + if (ret) { + clk_disable_unprepare(bs->clk); + return ret; + } + } + + spi_master_resume(master); + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(bcmbca_hsspi_pm_ops, bcmbca_hsspi_suspend, + bcmbca_hsspi_resume); + +static const struct of_device_id bcmbca_hsspi_of_match[] = { + {.compatible = "brcm,bcmbca-hsspi",}, + {}, +}; + +MODULE_DEVICE_TABLE(of, bcmbca_hsspi_of_match); + +static struct platform_driver bcmbca_hsspi_driver = { + .driver = { + .name = "bcmbca-hsspi", + .pm = &bcmbca_hsspi_pm_ops, + .of_match_table = bcmbca_hsspi_of_match, + }, + .probe = bcmbca_hsspi_probe, + .remove = bcmbca_hsspi_remove, +}; + +module_platform_driver(bcmbca_hsspi_driver); + +MODULE_ALIAS("platform:bcmbca_hsspi"); +MODULE_DESCRIPTION("Broadcom BCMBCA High Speed SPI Controller driver"); +MODULE_LICENSE("GPL");