From patchwork Thu Nov 5 19:35:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Walle X-Patchwork-Id: 11885027 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 35E98C388F7 for ; Thu, 5 Nov 2020 19:37:06 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A59AD20704 for ; Thu, 5 Nov 2020 19:37:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="0DF9unFs"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=walle.cc header.i=@walle.cc header.b="sOJbKSIz" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A59AD20704 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=walle.cc Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=sLnyYDtjja1SzIy67prBg8hbRgSRlElzF2edi+qnZlI=; b=0DF9unFsjLfJumL+dn7j8j1mF EOjRZUw5A4lRrFwb79khvtQmRMQqZMpaODeXp9HtBjmUKdjmObx1e+SUpa3xNBr+xyCapKcbMcrUn FZQ0gp7dZt3GPeZ+Bxk3oD/cV6TMZEMbFGRj3Jq4bD7mLt45FiuBIZ2zEWL076AJMZVjCXj+5KG66 rwmSphesfYkFyLcM07B0IemUy3SaEZb+hP+4nzE5fMAg+CgHQ1e0rgNB5Q8RxWalVGr+Lbm6G3uIK TyQrKlpSXcE55P7Gd0G4HVyEwnwy12kjGKCkyy3VaDcuZA3beZuzUH+77FayL/fs1o4dqEqoNvT39 gZ0c/Agtw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kal31-0000jj-VJ; Thu, 05 Nov 2020 19:35:52 +0000 Received: from ssl.serverraum.org ([2a01:4f8:151:8464::1:2]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kal2d-0000aS-Ji for linux-arm-kernel@lists.infradead.org; Thu, 05 Nov 2020 19:35:31 +0000 Received: from apollo.fritz.box (unknown [IPv6:2a02:810c:c200:2e91:6257:18ff:fec4:ca34]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ssl.serverraum.org (Postfix) with ESMTPSA id AADC222F9C; Thu, 5 Nov 2020 20:35:18 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1604604919; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ReHp2fm9OSWxCgIlDeVZla1A8qw/osOuWokzylh+8xI=; b=sOJbKSIz15FFPpqCG/+es9pUQ0P+ZCT5x1GN3fteL7H2XAtaXQkzb5Dl0rn9dHss0FTAC6 4wdNNc+5BAcYS1UrJ0i0cIaIQfuu9VVsY2rKN/BqDA2e5Fh7F6CnUHqIBIonlcHjSdNXNq 8x/nkLxzO3gc8HFnZyTSQ4iycd16pvQ= From: Michael Walle To: linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 1/5] clk: divider: add devm_clk_hw_register_divider_table() Date: Thu, 5 Nov 2020 20:35:08 +0100 Message-Id: <20201105193512.22388-2-michael@walle.cc> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20201105193512.22388-1-michael@walle.cc> References: <20201105193512.22388-1-michael@walle.cc> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201105_143528_039971_9589982A X-CRM114-Status: GOOD ( 17.05 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stephen Boyd , Michael Turquette , Li Yang , Michael Walle , Rob Herring , Shawn Guo Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This will simplify drivers which would only unregister the clk in their remove() op. Signed-off-by: Michael Walle --- Changes since v1: - new patch drivers/clk/clk-divider.c | 34 ++++++++++++++++++++++++++++++++++ include/linux/clk-provider.h | 27 +++++++++++++++++++++++++++ 2 files changed, 61 insertions(+) diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c index 8de12cb0c43d..c499799693cc 100644 --- a/drivers/clk/clk-divider.c +++ b/drivers/clk/clk-divider.c @@ -8,6 +8,7 @@ */ #include +#include #include #include #include @@ -578,3 +579,36 @@ void clk_hw_unregister_divider(struct clk_hw *hw) kfree(div); } EXPORT_SYMBOL_GPL(clk_hw_unregister_divider); + +static void devm_clk_hw_release_divider(struct device *dev, void *res) +{ + clk_hw_unregister_divider(*(struct clk_hw **)res); +} + +struct clk_hw *__devm_clk_hw_register_divider(struct device *dev, + struct device_node *np, const char *name, + const char *parent_name, const struct clk_hw *parent_hw, + const struct clk_parent_data *parent_data, unsigned long flags, + void __iomem *reg, u8 shift, u8 width, u8 clk_divider_flags, + const struct clk_div_table *table, spinlock_t *lock) +{ + struct clk_hw **ptr, *hw; + + ptr = devres_alloc(devm_clk_hw_release_divider, sizeof(*ptr), GFP_KERNEL); + if (!ptr) + return ERR_PTR(-ENOMEM); + + hw = __clk_hw_register_divider(dev, np, name, parent_name, parent_hw, + parent_data, flags, reg, shift, width, + clk_divider_flags, table, lock); + + if (!IS_ERR(hw)) { + *ptr = hw; + devres_add(dev, ptr); + } else { + devres_free(ptr); + } + + return hw; +} +EXPORT_SYMBOL_GPL(__devm_clk_hw_register_divider); diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 03a5de5f99f4..9ead4633c8c8 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -639,6 +639,12 @@ struct clk_hw *__clk_hw_register_divider(struct device *dev, const struct clk_parent_data *parent_data, unsigned long flags, void __iomem *reg, u8 shift, u8 width, u8 clk_divider_flags, const struct clk_div_table *table, spinlock_t *lock); +struct clk_hw *__devm_clk_hw_register_divider(struct device *dev, + struct device_node *np, const char *name, + const char *parent_name, const struct clk_hw *parent_hw, + const struct clk_parent_data *parent_data, unsigned long flags, + void __iomem *reg, u8 shift, u8 width, u8 clk_divider_flags, + const struct clk_div_table *table, spinlock_t *lock); struct clk *clk_register_divider_table(struct device *dev, const char *name, const char *parent_name, unsigned long flags, void __iomem *reg, u8 shift, u8 width, @@ -779,6 +785,27 @@ struct clk *clk_register_divider_table(struct device *dev, const char *name, (parent_data), (flags), (reg), (shift), \ (width), (clk_divider_flags), (table), \ (lock)) +/** + * devm_clk_hw_register_divider_table - register a table based divider clock + * with the clock framework (devres variant) + * @dev: device registering this clock + * @name: name of this clock + * @parent_name: name of clock's parent + * @flags: framework-specific flags + * @reg: register address to adjust divider + * @shift: number of bits to shift the bitfield + * @width: width of the bitfield + * @clk_divider_flags: divider-specific flags for this clock + * @table: array of divider/value pairs ending with a div set to 0 + * @lock: shared register lock for this clock + */ +#define devm_clk_hw_register_divider_table(dev, name, parent_name, flags, \ + reg, shift, width, \ + clk_divider_flags, table, lock) \ + __devm_clk_hw_register_divider((dev), NULL, (name), (parent_name), \ + NULL, NULL, (flags), (reg), (shift), \ + (width), (clk_divider_flags), (table), \ + (lock)) void clk_unregister_divider(struct clk *clk); void clk_hw_unregister_divider(struct clk_hw *hw); From patchwork Thu Nov 5 19:35:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Walle X-Patchwork-Id: 11885029 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B9B4DC388F7 for ; Thu, 5 Nov 2020 19:36:51 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2219720704 for ; 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Thu, 5 Nov 2020 20:35:19 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1604604920; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=kZmt24h7VqqkzcCxLkXiBSq6HI3bCDHlBnRkD++EPNo=; b=l9jTC+s/SBDVPY/BxlcmW4tdYruZEjX9PmZr+dzTxAF/ZmFyfHJzEmVYUOFJAntvbhirOc l6I+4Lhvr1iuEYvJIemYdveg9mEm44zm02L3bLaMc5FRCY6E7DOZEzKspNpKe1kiDC1Eut abYaCk20QDaIm1J0YKOBWbN67J6jsDM= From: Michael Walle To: linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 2/5] dt-bindings: clock: document the fsl-flexspi-clk driver Date: Thu, 5 Nov 2020 20:35:09 +0100 Message-Id: <20201105193512.22388-3-michael@walle.cc> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20201105193512.22388-1-michael@walle.cc> References: <20201105193512.22388-1-michael@walle.cc> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201105_143527_733574_C5CCE0AA X-CRM114-Status: GOOD ( 14.44 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rob Herring , Stephen Boyd , Michael Turquette , Li Yang , Michael Walle , Rob Herring , Shawn Guo Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Signed-off-by: Michael Walle Reviewed-by: Rob Herring --- Changes since v1: - none .../bindings/clock/fsl,flexspi-clock.yaml | 55 +++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/fsl,flexspi-clock.yaml diff --git a/Documentation/devicetree/bindings/clock/fsl,flexspi-clock.yaml b/Documentation/devicetree/bindings/clock/fsl,flexspi-clock.yaml new file mode 100644 index 000000000000..1fa390ee7b9b --- /dev/null +++ b/Documentation/devicetree/bindings/clock/fsl,flexspi-clock.yaml @@ -0,0 +1,55 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/fsl,flexspi-clock.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Freescale FlexSPI clock driver for Layerscape SoCs + +maintainers: + - Michael Walle + +description: + The Freescale Layerscape SoCs have a special FlexSPI clock which is + derived from the platform PLL. + +properties: + compatible: + enum: + - fsl,ls1028a-flexspi-clk + - fsl,lx2160a-flexspi-clk + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + '#clock-cells': + const: 0 + + clock-output-names: + maxItems: 1 + +required: + - compatible + - reg + - clocks + - '#clock-cells' + +additionalProperties: false + +examples: + - | + dcfg { + #address-cells = <1>; + #size-cells = <1>; + + fspi_clk: clock-controller@900 { + compatible = "fsl,ls1028a-flexspi-clk"; + reg = <0x900 0x4>; + #clock-cells = <0>; + clocks = <&parentclk>; + clock-output-names = "fspi_clk"; + }; + }; From patchwork Thu Nov 5 19:35:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Walle X-Patchwork-Id: 11885025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 75A90C388F7 for ; Thu, 5 Nov 2020 19:37:13 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EEB8420704 for ; 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Thu, 5 Nov 2020 20:35:22 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1604604923; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=MRGcEQ4FWCf2nRxtp5HPwwf68ZV2KBF7aB2+L+IOaTs=; b=TaXk45NFvaZ2zcgY5A0Y8gNmnOL2P1eN3Vf0G3dzN+H+lRBAXL5plB8veOTvDfjTyDiOjr d8dmRHohM1ed7aNH+xmtOFJnL9umXUzuVjFPlqn/QVwl9Ef3+/glTl9cSqGb/uFgx1VlS7 opUYZ1s0IED2xLD2ykqdGQKmRW3rloc= From: Michael Walle To: linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 3/5] clk: fsl-flexspi: new driver Date: Thu, 5 Nov 2020 20:35:10 +0100 Message-Id: <20201105193512.22388-4-michael@walle.cc> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20201105193512.22388-1-michael@walle.cc> References: <20201105193512.22388-1-michael@walle.cc> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201105_143527_941273_0F8F1659 X-CRM114-Status: GOOD ( 22.66 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stephen Boyd , Michael Turquette , Li Yang , Michael Walle , Rob Herring , Shawn Guo Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add support for the FlexSPI clock on Freescale Layerscape SoCs. The clock is a simple divider based one and is located inside the device configuration space (DCFG). This will allow switching the SCK frequencies for the FlexSPI interface on the LS1028A and the LX2160A. Signed-off-by: Michael Walle --- Changes since v1: - use devm_clk_hw_register_divider_table() and drop remove() drivers/clk/Kconfig | 8 +++ drivers/clk/Makefile | 1 + drivers/clk/clk-fsl-flexspi.c | 106 ++++++++++++++++++++++++++++++++++ 3 files changed, 115 insertions(+) create mode 100644 drivers/clk/clk-fsl-flexspi.c diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig index c715d4681a0b..0066f5af9e77 100644 --- a/drivers/clk/Kconfig +++ b/drivers/clk/Kconfig @@ -188,6 +188,14 @@ config COMMON_CLK_CS2000_CP help If you say yes here you get support for the CS2000 clock multiplier. +config COMMON_CLK_FSL_FLEXSPI + tristate "Clock driver for FlexSPI on Layerscape SoCs" + depends on ARCH_LAYERSCAPE || COMPILE_TEST + default ARCH_LAYERSCAPE && SPI_NXP_FLEXSPI + help + On Layerscape SoCs there is a special clock for the FlexSPI + interface. + config COMMON_CLK_FSL_SAI bool "Clock driver for BCLK of Freescale SAI cores" depends on ARCH_LAYERSCAPE || COMPILE_TEST diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile index da8fcf147eb1..dbdc590e7de3 100644 --- a/drivers/clk/Makefile +++ b/drivers/clk/Makefile @@ -30,6 +30,7 @@ obj-$(CONFIG_COMMON_CLK_CS2000_CP) += clk-cs2000-cp.o obj-$(CONFIG_ARCH_EFM32) += clk-efm32gg.o obj-$(CONFIG_ARCH_SPARX5) += clk-sparx5.o obj-$(CONFIG_COMMON_CLK_FIXED_MMIO) += clk-fixed-mmio.o +obj-$(CONFIG_COMMON_CLK_FSL_FLEXSPI) += clk-fsl-flexspi.o obj-$(CONFIG_COMMON_CLK_FSL_SAI) += clk-fsl-sai.o obj-$(CONFIG_COMMON_CLK_GEMINI) += clk-gemini.o obj-$(CONFIG_COMMON_CLK_ASPEED) += clk-aspeed.o diff --git a/drivers/clk/clk-fsl-flexspi.c b/drivers/clk/clk-fsl-flexspi.c new file mode 100644 index 000000000000..87d5d7b74f29 --- /dev/null +++ b/drivers/clk/clk-fsl-flexspi.c @@ -0,0 +1,106 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Layerscape FlexSPI clock driver + * + * Copyright 2020 Michael Walle + */ + +#include +#include +#include +#include + +static const struct clk_div_table ls1028a_flexspi_divs[] = { + { .val = 0, .div = 1, }, + { .val = 1, .div = 2, }, + { .val = 2, .div = 3, }, + { .val = 3, .div = 4, }, + { .val = 4, .div = 5, }, + { .val = 5, .div = 6, }, + { .val = 6, .div = 7, }, + { .val = 7, .div = 8, }, + { .val = 11, .div = 12, }, + { .val = 15, .div = 16, }, + { .val = 16, .div = 20, }, + { .val = 17, .div = 24, }, + { .val = 18, .div = 28, }, + { .val = 19, .div = 32, }, + { .val = 20, .div = 80, }, + {} +}; + +static const struct clk_div_table lx2160a_flexspi_divs[] = { + { .val = 1, .div = 2, }, + { .val = 3, .div = 4, }, + { .val = 5, .div = 6, }, + { .val = 7, .div = 8, }, + { .val = 11, .div = 12, }, + { .val = 15, .div = 16, }, + { .val = 16, .div = 20, }, + { .val = 17, .div = 24, }, + { .val = 18, .div = 28, }, + { .val = 19, .div = 32, }, + { .val = 20, .div = 80, }, + {} +}; + +static int fsl_flexspi_clk_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + const char *clk_name = np->name; + const char *clk_parent; + struct resource *res; + void __iomem *reg; + struct clk_hw *hw; + const struct clk_div_table *divs; + + divs = device_get_match_data(dev); + if (!divs) + return -ENOENT; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -ENOENT; + + /* + * Can't use devm_ioremap_resource() or devm_of_iomap() because the + * resource might already be taken by the parent device. + */ + reg = devm_ioremap(dev, res->start, resource_size(res)); + if (!reg) + return -ENOMEM; + + clk_parent = of_clk_get_parent_name(np, 0); + if (!clk_parent) + return -EINVAL; + + of_property_read_string(np, "clock-output-names", &clk_name); + + hw = devm_clk_hw_register_divider_table(dev, clk_name, clk_parent, 0, + reg, 0, 5, 0, divs, NULL); + if (IS_ERR(hw)) + return PTR_ERR(hw); + + return devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get, hw); +} + +static const struct of_device_id fsl_flexspi_clk_dt_ids[] = { + { .compatible = "fsl,ls1028a-flexspi-clk", .data = &ls1028a_flexspi_divs }, + { .compatible = "fsl,lx2160a-flexspi-clk", .data = &lx2160a_flexspi_divs }, + {} +}; + +static struct platform_driver fsl_flexspi_clk_driver = { + .driver = { + .name = "fsl-flexspi-clk", + .of_match_table = fsl_flexspi_clk_dt_ids, + }, + .probe = fsl_flexspi_clk_probe, +}; +module_platform_driver(fsl_flexspi_clk_driver); + +MODULE_DESCRIPTION("FlexSPI clock driver for Layerscape SoCs"); +MODULE_AUTHOR("Michael Walle "); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:fsl-flexspi-clk"); 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Thu, 5 Nov 2020 20:35:23 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1604604923; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Ucz/4nF66ouu1r39hVjYEnRwtNvHWgDO+P7rFCmWSc0=; b=PnuV2pg2vv2rQroO86gWTrQnmefJJGPAq4xUmA+Uc9c9HFJNUVVM6qw36pYg+sLa5Ck8ec 8EAQtcf3nfshxsxss0skCIfRyauZ227AyLfA0Ynwpsgc+hTTwYUvDAlw6baEj5C6QH8muM VXTkMxqANgivIx9fWg1nvS2P23RikXI= From: Michael Walle To: linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 4/5] arm64: dts: ls1028a: fix FlexSPI clock Date: Thu, 5 Nov 2020 20:35:11 +0100 Message-Id: <20201105193512.22388-5-michael@walle.cc> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20201105193512.22388-1-michael@walle.cc> References: <20201105193512.22388-1-michael@walle.cc> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201105_143527_791496_868BB7F4 X-CRM114-Status: GOOD ( 14.13 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stephen Boyd , Michael Turquette , Li Yang , Michael Walle , Rob Herring , Shawn Guo Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Now that we have a proper driver for the FlexSPI interface use it. This will fix SCK frequency switching on Layerscape SoCs. This was tested on the Kontron sl28 board. Signed-off-by: Michael Walle --- Changes since v1: - none arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi index ef413bae44cb..4c8b20e6312b 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi +++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi @@ -204,9 +204,20 @@ }; dcfg: syscon@1e00000 { - compatible = "fsl,ls1028a-dcfg", "syscon"; + #address-cells = <1>; + #size-cells = <1>; + compatible = "fsl,ls1028a-dcfg", "syscon", "simple-mfd"; reg = <0x0 0x1e00000 0x0 0x10000>; + ranges = <0x0 0x0 0x1e00000 0x10000>; little-endian; + + fspi_clk: clock-controller@900 { + compatible = "fsl,ls1028a-flexspi-clk"; + reg = <0x900 0x4>; + #clock-cells = <0>; + clocks = <&clockgen 4 0>; + clock-output-names = "fspi_clk"; + }; }; rst: syscon@1e60000 { @@ -316,7 +327,7 @@ <0x0 0x20000000 0x0 0x10000000>; reg-names = "fspi_base", "fspi_mmap"; interrupts = ; - clocks = <&clockgen 4 3>, <&clockgen 4 3>; + clocks = <&clockgen 4 3>, <&fspi_clk>; clock-names = "fspi_en", "fspi"; status = "disabled"; }; From patchwork Thu Nov 5 19:35:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Walle X-Patchwork-Id: 11885011 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CCDD3C4741F for ; Thu, 5 Nov 2020 19:36:25 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 46158206F9 for ; 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Thu, 5 Nov 2020 20:35:24 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1604604924; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=eo+fPBfPzk/qMCRWMSDzjxSvOrHTFJ/sZimjalXzeRw=; b=j+rtgJWGm/jt67NwLZCmWqhjqFiPqzQ6yzxElteyt0p89CEJz+nn8DxhI7NBcdbK6GqH0W QdLDiN0AlTrAeO/uOhdYn2+OkaU3xTbATtis9BupxwgVwCdOmpcfeVn+0d7uro7VU8RGQn n9ABZOaj842J71fkNZqAye5m5qOTFE0= From: Michael Walle To: linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 5/5] arm64: dts: lx2160a: fix FlexSPI clock Date: Thu, 5 Nov 2020 20:35:12 +0100 Message-Id: <20201105193512.22388-6-michael@walle.cc> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20201105193512.22388-1-michael@walle.cc> References: <20201105193512.22388-1-michael@walle.cc> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201105_143530_289029_89845C3D X-CRM114-Status: GOOD ( 13.48 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stephen Boyd , Michael Turquette , Li Yang , Michael Walle , Rob Herring , Shawn Guo Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Now that we have a proper driver for the FlexSPI interface use it. This will fix SCK frequency switching on Layerscape SoCs. This was only compile time tested. Signed-off-by: Michael Walle --- Changes since v1: - none arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi index 83072da6f6c6..6e375e80bd35 100644 --- a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi +++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi @@ -659,9 +659,20 @@ }; dcfg: syscon@1e00000 { - compatible = "fsl,lx2160a-dcfg", "syscon"; + #address-cells = <1>; + #size-cells = <1>; + compatible = "fsl,lx2160a-dcfg", "syscon", "simple-mfd"; reg = <0x0 0x1e00000 0x0 0x10000>; + ranges = <0x0 0x0 0x1e00000 0x10000>; little-endian; + + fspi_clk: clock-controller@900 { + compatible = "fsl,lx2160a-flexspi-clk"; + reg = <0x900 0x4>; + #clock-cells = <0>; + clocks = <&clockgen 4 0>; + clock-output-names = "fspi_clk"; + }; }; tmu: tmu@1f80000 { @@ -776,7 +787,7 @@ <0x0 0x20000000 0x0 0x10000000>; reg-names = "fspi_base", "fspi_mmap"; interrupts = ; - clocks = <&clockgen 4 3>, <&clockgen 4 3>; + clocks = <&clockgen 4 3>, <&fspi_clk>; clock-names = "fspi_en", "fspi"; status = "disabled"; };