From patchwork Fri Sep 16 08:07:41 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 12978239 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 1826CC54EE9 for ; Fri, 16 Sep 2022 08:08:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=7GmVK0bU/DawU0FDDjddT4Sg1CXW4oqV7hJoNS2uI8U=; b=LokKc5rGmJvsruwfQKFc0fQXqu LtLQ0GV12FKVH+o8YvStmeDg+Ff7FQrpRmwSMzsqx3G16tHNonELLXfb/knjC6oWHaBI1hVcpcMY6 H1oR7+PhEvVfc+Z8p3UaGjAk27I19Fu1S+Jvex1ou1fCRk9b5BSKp+AmE3QpOGEVpnzPHnx+eukBo XSRJcfWF9F6mwvB0sA7ARfV8g4WAWWS86qcTzRH8+W5R3JLDtG8jdUOVLxfdBzwxP4ppPpZ93RcDt tDprUfuVQssp0l3cdrcsZFHWI1ESWEKJmaopk4uFe/tX8vkWq3Qk4fymPq1gke4/MmldAcqRcwV+Z NG/XD6ew==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oZ6OV-00AhRs-Al; Fri, 16 Sep 2022 08:08:15 +0000 Received: from madras.collabora.co.uk ([46.235.227.172]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oZ6O6-00Agko-Mg; Fri, 16 Sep 2022 08:07:52 +0000 Received: from IcarusMOD.eternityproject.eu (2-237-20-237.ip236.fastwebnet.it [2.237.20.237]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by madras.collabora.co.uk (Postfix) with ESMTPSA id EEFF06601FAF; Fri, 16 Sep 2022 09:07:45 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1663315666; bh=EGEeQPHzg9d9NeLO4LlWhqbKYOV3HYOQAzbQDjfcLPo=; h=From:To:Cc:Subject:Date:From; b=dwIlyRZpI255XiQ5X5bnfs17TlqwaHJeAxfgxbOmPZYmaWvjo1sddVURK2O5hqGSK tg7kzERlD8aw6wM5W3r5mKylCFJgfjszbQ9WxOU5oMr8zanVDayOa/Pe3EFTUICmV6 trA6xPZHGGEJFRfGgGfDybjrbyQsnUI9GQBcwxyNUdKMCvFJTfg2/BG6V3Z9etGWFb pphSD1tFBx7KrY/UQ1EBXlZZsSQ0uJUJfXgvLjGyullzqyz9BgTv+pb8r/hfhHmPhT AG7+s8MY9cJSTtjtNUYj/2VfvuTVEyaPNo9iqvhdtwE/Gjn3S2ltgYM7T8nYkzDtYB T04Ika6vl9r6g== From: AngeloGioacchino Del Regno To: robh+dt@kernel.org Cc: jassisinghbrar@gmail.com, krzysztof.kozlowski+dt@linaro.org, matthias.bgg@gmail.com, houlong.wei@mediatek.com, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, AngeloGioacchino Del Regno Subject: [PATCH v2 1/2] dt-bindings: mailbox: Convert mtk-gce to DT schema Date: Fri, 16 Sep 2022 10:07:41 +0200 Message-Id: <20220916080742.26851-1-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.37.2 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220916_010751_025254_CFD1F86E X-CRM114-Status: GOOD ( 22.36 ) X-BeenThere: linux-mediatek@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-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Convert the mtk-gce mailbox binding to DT schema format. Signed-off-by: AngeloGioacchino Del Regno --- A previous attempt for this was made at [1], but it was changing the way of getting clocks (by name for all). Keeping clock-names not required for the multi-gce case makes this binding simpler, hence I chose to abandon the change at [1] and go for this one instead. Any Reviewed-by or Acked-by tag was dropped, as this conversion was completely redone from scratch and differs from [1] for the aforementioned reasons. [1]: https://lore.kernel.org/all/20220524151512.247435-1-angelogioacchino.delregno@collabora.com/ .../mailbox/mediatek,gce-mailbox.yaml | 104 ++++++++++++++++++ .../devicetree/bindings/mailbox/mtk-gce.txt | 82 -------------- 2 files changed, 104 insertions(+), 82 deletions(-) create mode 100644 Documentation/devicetree/bindings/mailbox/mediatek,gce-mailbox.yaml delete mode 100644 Documentation/devicetree/bindings/mailbox/mtk-gce.txt diff --git a/Documentation/devicetree/bindings/mailbox/mediatek,gce-mailbox.yaml b/Documentation/devicetree/bindings/mailbox/mediatek,gce-mailbox.yaml new file mode 100644 index 000000000000..ac6ca7fc5302 --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/mediatek,gce-mailbox.yaml @@ -0,0 +1,104 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mailbox/mediatek,gce-mailbox.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Mediatek Global Command Engine Mailbox + +maintainers: + - Houlong Wei + +description: | + The Global Command Engine (GCE) is used to help read/write registers with + critical time limitation, such as updating display configuration during the + vblank. The GCE can be used to implement the Command Queue (CMDQ) driver. + +properties: + compatible: + enum: + - mediatek,mt6779-gce + - mediatek,mt8173-gce + - mediatek,mt8183-gce + - mediatek,mt8186-gce + - mediatek,mt8192-gce + - mediatek,mt8195-gce + + "#mbox-cells": + const: 2 + description: + The first cell describes the Thread ID of the GCE, + the second cell describes the priority of the GCE thread + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + items: + - description: Global Command Engine clock + + clock-names: + items: + - const: gce + +required: + - compatible + - "#mbox-cells" + - reg + - interrupts + - clocks + +if: + not: + properties: + compatible: + contains: + const: mediatek,mt8195-gce +then: + required: + - clock-names + +additionalProperties: false + +examples: + # Example for a device client and for a MediaTek mutex client + - | + #include + #include + #include + #include + #include + + gce: mailbox@12120000 { + compatible = "mediatek,mt8173-gce"; + reg = <0x10816000 0x1000>; + interrupts = ; + #mbox-cells = <2>; + clocks = <&infracfg CLK_INFRA_GCE>; + clock-names = "gce"; + }; + + syscon@14000000 { + compatible = "mediatek,mt8173-mmsys", "syscon"; + reg = <0x14000000 0x1000>; + power-domains = <&spm MT8173_POWER_DOMAIN_MM>; + #clock-cells = <1>; + #reset-cells = <1>; + mboxes = <&gce 0 CMDQ_THR_PRIO_HIGHEST>, + <&gce 1 CMDQ_THR_PRIO_HIGHEST>; + mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0 0x1000>; + }; + + mutex@14020000 { + compatible = "mediatek,mt8173-disp-mutex"; + reg = <0x14020000 0x1000>; + interrupts = ; + power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>; + clocks = <&mmsys CLK_MM_MUTEX_32K>; + mediatek,gce-client-reg = <&gce SUBSYS_1402XXXX 0 0x1000>; + mediatek,gce-events = , + ; + }; diff --git a/Documentation/devicetree/bindings/mailbox/mtk-gce.txt b/Documentation/devicetree/bindings/mailbox/mtk-gce.txt deleted file mode 100644 index c2aeba63bd47..000000000000 --- a/Documentation/devicetree/bindings/mailbox/mtk-gce.txt +++ /dev/null @@ -1,82 +0,0 @@ -MediaTek GCE -=============== - -The Global Command Engine (GCE) is used to help read/write registers with -critical time limitation, such as updating display configuration during the -vblank. The GCE can be used to implement the Command Queue (CMDQ) driver. - -CMDQ driver uses mailbox framework for communication. Please refer to -mailbox.txt for generic information about mailbox device-tree bindings. - -Required properties: -- compatible: can be "mediatek,mt8173-gce", "mediatek,mt8183-gce", - "mediatek,mt8186-gce", "mediatek,mt8192-gce", "mediatek,mt8195-gce" or - "mediatek,mt6779-gce". -- reg: Address range of the GCE unit -- interrupts: The interrupt signal from the GCE block -- clock: Clocks according to the common clock binding -- clock-names: Must be "gce" to stand for GCE clock -- #mbox-cells: Should be 2. - <&phandle channel priority> - phandle: Label name of a gce node. - channel: Channel of mailbox. Be equal to the thread id of GCE. - priority: Priority of GCE thread. - -Required properties for a client device: -- mboxes: Client use mailbox to communicate with GCE, it should have this - property and list of phandle, mailbox specifiers. -Optional properties for a client device: -- mediatek,gce-client-reg: Specify the sub-system id which is corresponding - to the register address, it should have this property and list of phandle, - sub-system specifiers. - <&phandle subsys_number start_offset size> - phandle: Label name of a gce node. - subsys_number: specify the sub-system id which is corresponding - to the register address. - start_offset: the start offset of register address that GCE can access. - size: the total size of register address that GCE can access. - -Optional properties for a client mutex node: -- mediatek,gce-events: GCE events used by clients. The event numbers are - defined in 'dt-bindings/gce/-gce.h'. - -Some vaules of properties are defined in 'dt-bindings/gce/mt8173-gce.h', -'dt-bindings/gce/mt8183-gce.h', 'dt-bindings/gce/mt8186-gce.h' -'dt-bindings/gce/mt8192-gce.h', 'dt-bindings/gce/mt8195-gce.h' or -'dt-bindings/gce/mt6779-gce.h'. -Such as sub-system ids, thread priority, event ids. - -Example: - - gce: gce@10212000 { - compatible = "mediatek,mt8173-gce"; - reg = <0 0x10212000 0 0x1000>; - interrupts = ; - clocks = <&infracfg CLK_INFRA_GCE>; - clock-names = "gce"; - #mbox-cells = <2>; - }; - -Example for a client device: - - mmsys: clock-controller@14000000 { - compatible = "mediatek,mt8173-mmsys"; - mboxes = <&gce 0 CMDQ_THR_PRIO_LOWEST>, - <&gce 1 CMDQ_THR_PRIO_LOWEST>; - mutex-event-eof = ; - mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x3000 0x1000>, - <&gce SUBSYS_1401XXXX 0x2000 0x100>; - ... - }; - -Example for a client mutex node: - mutex: mutex@14020000 { - compatible = "mediatek,mt8173-disp-mutex"; - reg = <0 0x14020000 0 0x1000>; - interrupts = ; - power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>; - clocks = <&mmsys CLK_MM_MUTEX_32K>; - mediatek,gce-events = , - ; - };