From patchwork Wed Dec 7 16:24:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13067333 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 552C1C63703 for ; Wed, 7 Dec 2022 16:24:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229844AbiLGQYp (ORCPT ); Wed, 7 Dec 2022 11:24:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48268 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229762AbiLGQYo (ORCPT ); Wed, 7 Dec 2022 11:24:44 -0500 Received: from relay2-d.mail.gandi.net (relay2-d.mail.gandi.net [IPv6:2001:4b98:dc4:8::222]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6FE8A2BF1; Wed, 7 Dec 2022 08:24:42 -0800 (PST) Received: (Authenticated sender: herve.codina@bootlin.com) by mail.gandi.net (Postfix) with ESMTPA id E8FDB40003; Wed, 7 Dec 2022 16:24:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1670430280; 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; bh=uXJ9vQ0Ynsot47CGwLCWr7UusrmSQ01bL1ZRlYaTFVo=; b=jWDZwiQ8jwUnrFFI1b5mTkv69adeV5Eug7HW9Dba1jfz2rniPainJkBrJlVaZFSGfbYdD1 2I1z0cr16Jm7Zpo0GBx8JPmmXTC9Lx1D33B23cmmyO0QOR9pffoiUQQiSHYkp75rF2dKQH XAUiWHY22RRehFAZp1L2y1U+p9yGZ0aHpPM+JmT1EHIRhxFB8f2MdiH2iglaArOZf9t2vy tZBm7m10XE09CArmpWBiubotGMHEXBuVIC/OnaU3Xsej2CUoN+ZEokGW7jcu5pOrIbbXUh 88Fd9SSvFUlM6D+bzyxYoCTXcqeD/rUSK48RnO4em9+KcPGPa056jZZbS4arqg== From: Herve Codina To: Geert Uytterhoeven , Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Herve Codina , Greg Kroah-Hartman , Magnus Damm , Gareth Williams Cc: linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, Thomas Petazzoni , Miquel Raynal Subject: [PATCH v3 0/9] Add the Renesas USBF controller support Date: Wed, 7 Dec 2022 17:24:26 +0100 Message-Id: <20221207162435.1001782-1-herve.codina@bootlin.com> X-Mailer: git-send-email 2.38.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Hi, This series add support for the Renesas USBF controller (USB Device Controller) available in the Renesas RZ/N1 SoC. Based on previous review: https://lore.kernel.org/all/20221114111513.1436165-3-herve.codina@bootlin.com/ A new strategy is proposed to handle the H2MODE bit from CFG_USB register compared to the previous versions on the series. As a reminder, H2MODE bit allows to configure the internal USB Port interface for two hosts or one host and one device. This new strategy is: - Add the new generic 'depends-on' property in the device tree. This generic property expresses an simple functionnal dependency that does not rely on a specific topic. It is an 'order only' dependency that can be used for dependencies between consumers and producers that are not based on a specific infrastructure and not need other relationship than this simple 'order only' (ie no API is provided between the provider and the consumer) The 'depends-on' property is handled in a generic way using fw_devlink. The probe() function calls order is ensured by the core infrastructure. In the nodes impacted by H2MODE, 'depends-on' is used to express the dependency to sysctrl. - At sysctrl level, during the probe, switch to '1 host, 1 device' mode only if the USB device is available. Patches 1, 2 and 3 are related to 'depends-on' in the PCI bridge node. This PCI bridge connects the USB host controllers to the AHB bus Patch 4 adds the 'depends-on' support in fw_devlink Patch 6 handles h2mode in sysctrl Patch 5, 7, 8 and 9 are related to the USBF controller with a new binding definition, the driver itself and myself as a maintainer of this controller. Best regards, Herve Codina Changes v2 -> v3: - v2 Patches 1, 2 and 3 removed. - Patches 1, 2, 3 and 4 (new patches) - Patch 5 (v2 patch 4): Add 'depends-on' property Removed redundant 'binding' word - Patch 6 (new patch) - Patch 7 (v2 patch 5) Removed h2mode checking. This check is no more needed and the API no more available. - Patch 8 (v2 patch 6) Add 'depends-on' property - Patch 9 (v2 patch 7) Fix file name Changes v1 -> v2: - Patch 1: Rename r9a06g032_sysctrl_get_usb_h2mode to r9a06g032_sysctrl_get_usb_role and return USB_ROLE_{HOST,DEVICE} or an error code. Reword commit log - Patches 2 and 3: No changes. Some previous feedbacks still need to be taken into account https://lore.kernel.org/all/20221107182642.05a09f2f@bootlin.com/ https://lore.kernel.org/all/20221107173614.474707d7@bootlin.com/ - Patch 4: Rename file from renesas,usbf.yaml to renesas,rzn1-usbf.yaml. Remove 'oneOf'. Add blank line and line break. Add 'power-domains'. Reword commit log - Patch 5: Remove clocks handling (handled by runtime PM through the clock domain pointed by power-domains). Fix compilation warning raised by the 'kernel test robot'. - Patch 6: Add 'power-domains' - Patch 7: Add 'Reviewed-by: Geert Uytterhoeven ' Herve Codina (9): dt-bindings: PCI: renesas,pci-rcar-gen2: Add depends-on for RZ/N1 SoC family ARM: dts: r9a06g032: Add dependency to sysctrl in the PCI bridge dt-bindings: PCI: renesas,pci-rcar-gen2: 'depends-on' is no more optional of: property: fw_devlink: Add support for "depends-on" dt-bindings: usb: add the Renesas RZ/N1 USBF controller soc: renesas: r9a06g032-sysctrl: Handle h2mode setting based on USBF presence usb: gadget: udc: add Renesas RZ/N1 USBF controller support ARM: dts: r9a06g032: Add the USBF controller node MAINTAINERS: add the Renesas RZ/N1 USBF controller entry .../bindings/pci/renesas,pci-rcar-gen2.yaml | 7 + .../bindings/usb/renesas,rzn1-usbf.yaml | 77 + MAINTAINERS | 8 + arch/arm/boot/dts/r9a06g032.dtsi | 14 + drivers/clk/renesas/r9a06g032-clocks.c | 28 + drivers/of/property.c | 2 + drivers/usb/gadget/udc/Kconfig | 11 + drivers/usb/gadget/udc/Makefile | 1 + drivers/usb/gadget/udc/renesas_usbf.c | 3420 +++++++++++++++++ 9 files changed, 3568 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/renesas,rzn1-usbf.yaml create mode 100644 drivers/usb/gadget/udc/renesas_usbf.c