From patchwork Tue Sep 24 09:36:07 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 11158341 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A348C17EE for ; Tue, 24 Sep 2019 09:36:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8BB59214DA for ; Tue, 24 Sep 2019 09:36:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2504276AbfIXJg7 (ORCPT ); Tue, 24 Sep 2019 05:36:59 -0400 Received: from kirsty.vergenet.net ([202.4.237.240]:42618 "EHLO kirsty.vergenet.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2504273AbfIXJg6 (ORCPT ); Tue, 24 Sep 2019 05:36:58 -0400 Received: from reginn.horms.nl (watermunt.horms.nl [80.127.179.77]) by kirsty.vergenet.net (Postfix) with ESMTPA id 49A8A25B7AD; Tue, 24 Sep 2019 19:36:51 +1000 (AEST) Received: by reginn.horms.nl (Postfix, from userid 7100) id 1A432944113; Tue, 24 Sep 2019 11:36:49 +0200 (CEST) From: Simon Horman To: Rob Herring , Mark Rutland , Andy Gross , Geert Uytterhoeven Cc: Magnus Damm , Yoshihiro Kaneko , devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Simon Horman Subject: [PATCH v3 1/3] dt-bindings: bus: simple-pm-bus: convert bindings to json-schema Date: Tue, 24 Sep 2019 11:36:07 +0200 Message-Id: <20190924093609.22895-2-horms+renesas@verge.net.au> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20190924093609.22895-1-horms+renesas@verge.net.au> References: <20190924093609.22895-1-horms+renesas@verge.net.au> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Convert Simple Power-Managed Bus bindings documentation to json-schema. As a side effect of this change only simple-pm-bus is used in example. A follow-up patch will provide an example for the separately documented Renesas Bus State Controller (BSC) that uses "renesas,bsc-sh73a0" and "renesas,bsc" compat strings. Signed-off-by: Simon Horman --- * Based on v5.3 * Tested using: # ARCH=arm64 make dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/bus/simple-pm-bus.yaml # ARCH=arm make dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/bus/simple-pm-bus.yaml v2 * Add SPDX line * Remove extra blank line * Add $nodename * Remove extra leading space in compatible * Update compatible to allow override by other schemas * Allow #size-cells to be 1 or 2 * Do not limit ranges or clocks to 1 item * Add anyOf requirement on ranges or clocks * Update example based on msm8996.dtsi --- .../devicetree/bindings/bus/simple-pm-bus.txt | 44 ------------- .../devicetree/bindings/bus/simple-pm-bus.yaml | 75 ++++++++++++++++++++++ 2 files changed, 75 insertions(+), 44 deletions(-) delete mode 100644 Documentation/devicetree/bindings/bus/simple-pm-bus.txt create mode 100644 Documentation/devicetree/bindings/bus/simple-pm-bus.yaml diff --git a/Documentation/devicetree/bindings/bus/simple-pm-bus.txt b/Documentation/devicetree/bindings/bus/simple-pm-bus.txt deleted file mode 100644 index 6f15037131ed..000000000000 --- a/Documentation/devicetree/bindings/bus/simple-pm-bus.txt +++ /dev/null @@ -1,44 +0,0 @@ -Simple Power-Managed Bus -======================== - -A Simple Power-Managed Bus is a transparent bus that doesn't need a real -driver, as it's typically initialized by the boot loader. - -However, its bus controller is part of a PM domain, or under the control of a -functional clock. Hence, the bus controller's PM domain and/or clock must be -enabled for child devices connected to the bus (either on-SoC or externally) -to function. - -While "simple-pm-bus" follows the "simple-bus" set of properties, as specified -in the Devicetree Specification, it is not an extension of "simple-bus". - - -Required properties: - - compatible: Must contain at least "simple-pm-bus". - Must not contain "simple-bus". - It's recommended to let this be preceded by one or more - vendor-specific compatible values. - - #address-cells, #size-cells, ranges: Must describe the mapping between - parent address and child address spaces. - -Optional platform-specific properties for clock or PM domain control (at least -one of them is required): - - clocks: Must contain a reference to the functional clock(s), - - power-domains: Must contain a reference to the PM domain. -Please refer to the binding documentation for the clock and/or PM domain -providers for more details. - - -Example: - - bsc: bus@fec10000 { - compatible = "renesas,bsc-sh73a0", "renesas,bsc", - "simple-pm-bus"; - #address-cells = <1>; - #size-cells = <1>; - ranges = <0 0 0x20000000>; - reg = <0xfec10000 0x400>; - interrupts = <0 39 IRQ_TYPE_LEVEL_HIGH>; - clocks = <&zb_clk>; - power-domains = <&pd_a4s>; - }; diff --git a/Documentation/devicetree/bindings/bus/simple-pm-bus.yaml b/Documentation/devicetree/bindings/bus/simple-pm-bus.yaml new file mode 100644 index 000000000000..598b71d779b1 --- /dev/null +++ b/Documentation/devicetree/bindings/bus/simple-pm-bus.yaml @@ -0,0 +1,75 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/bus/simple-pm-bus.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Simple Power-Managed Bus + +maintainers: + - Geert Uytterhoeven + +description: | + A Simple Power-Managed Bus is a transparent bus that doesn't need a real + driver, as it's typically initialized by the boot loader. + + However, its bus controller is part of a PM domain, or under the control + of a functional clock. Hence, the bus controller's PM domain and/or + clock must be enabled for child devices connected to the bus (either + on-SoC or externally) to function. + + While "simple-pm-bus" follows the "simple-bus" set of properties, as + specified in the Devicetree Specification, it is not an extension of + "simple-bus". + +properties: + $nodename: + pattern: "^bus([@-][0-9a-f]+)?$" + + compatible: + contains: + const: simple-pm-bus + description: + Shall contain "simple-pm-bus" in addition to a optional bus-specific + compatible strings defined in individual pm-bus bindings. + + '#address-cells': + const: 1 + + '#size-cells': + enum: [ 1, 2 ] + + ranges: true + + clocks: true + # Functional clocks + # Required if power-domains is absent, optional otherwise + + power-domains: + # Required if clocks is absent, optional otherwise + minItems: 1 + +required: + - compatible + - '#address-cells' + - '#size-cells' + - ranges + +anyOf: + - required: + - clocks + - required: + - power-domains + +examples: + - | + #include + #include + + bus { + power-domains = <&gcc AGGRE0_NOC_GDSC>; + compatible = "simple-pm-bus"; + #address-cells = <1>; + #size-cells = <1>; + ranges; + }; From patchwork Tue Sep 24 09:36:08 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 11158337 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2F96517EE for ; Tue, 24 Sep 2019 09:36:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 18E87214D9 for ; Tue, 24 Sep 2019 09:36:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2504187AbfIXJg4 (ORCPT ); Tue, 24 Sep 2019 05:36:56 -0400 Received: from kirsty.vergenet.net ([202.4.237.240]:42618 "EHLO kirsty.vergenet.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391886AbfIXJg4 (ORCPT ); Tue, 24 Sep 2019 05:36:56 -0400 Received: from reginn.horms.nl (watermunt.horms.nl [80.127.179.77]) by kirsty.vergenet.net (Postfix) with ESMTPA id 3E3C225B764; Tue, 24 Sep 2019 19:36:51 +1000 (AEST) Received: by reginn.horms.nl (Postfix, from userid 7100) id 26B20944436; Tue, 24 Sep 2019 11:36:49 +0200 (CEST) From: Simon Horman To: Rob Herring , Mark Rutland , Andy Gross , Geert Uytterhoeven Cc: Magnus Damm , Yoshihiro Kaneko , devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Simon Horman Subject: [PATCH v3 2/3] dt-bindings: bus: renesas-bsc: convert bindings to json-schema Date: Tue, 24 Sep 2019 11:36:08 +0200 Message-Id: <20190924093609.22895-3-horms+renesas@verge.net.au> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20190924093609.22895-1-horms+renesas@verge.net.au> References: <20190924093609.22895-1-horms+renesas@verge.net.au> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Convert Renesas Bus State Controller (BSC) bindings documentation to json-schema. Signed-off-by: Simon Horman --- * Based on v5.3 * Tested using: # ARCH=arm64 make dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/bus/renesas,bsc.yaml # ARCH=arm make dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/bus/renesas,bsc.yaml v2 * Add required field as suggested by Ulrich Hecht * Add custom 'select' in that leaves out "simple-pm-bus" to avoid matching on users of the binding documented in simple-pm-bus.yaml, which this binding extends --- .../devicetree/bindings/bus/renesas,bsc.txt | 46 ----------------- .../devicetree/bindings/bus/renesas,bsc.yaml | 60 ++++++++++++++++++++++ 2 files changed, 60 insertions(+), 46 deletions(-) delete mode 100644 Documentation/devicetree/bindings/bus/renesas,bsc.txt create mode 100644 Documentation/devicetree/bindings/bus/renesas,bsc.yaml diff --git a/Documentation/devicetree/bindings/bus/renesas,bsc.txt b/Documentation/devicetree/bindings/bus/renesas,bsc.txt deleted file mode 100644 index 90e947269437..000000000000 --- a/Documentation/devicetree/bindings/bus/renesas,bsc.txt +++ /dev/null @@ -1,46 +0,0 @@ -Renesas Bus State Controller (BSC) -================================== - -The Renesas Bus State Controller (BSC, sometimes called "LBSC within Bus -Bridge", or "External Bus Interface") can be found in several Renesas ARM SoCs. -It provides an external bus for connecting multiple external devices to the -SoC, driving several chip select lines, for e.g. NOR FLASH, Ethernet and USB. - -While the BSC is a fairly simple memory-mapped bus, it may be part of a PM -domain, and may have a gateable functional clock. -Before a device connected to the BSC can be accessed, the PM domain -containing the BSC must be powered on, and the functional clock -driving the BSC must be enabled. - -The bindings for the BSC extend the bindings for "simple-pm-bus". - - -Required properties - - compatible: Must contain an SoC-specific value, and "renesas,bsc" and - "simple-pm-bus" as fallbacks. - SoC-specific values can be: - "renesas,bsc-r8a73a4" for R-Mobile APE6 (r8a73a4) - "renesas,bsc-sh73a0" for SH-Mobile AG5 (sh73a0) - - #address-cells, #size-cells, ranges: Must describe the mapping between - parent address and child address spaces. - - reg: Must contain the base address and length to access the bus controller. - -Optional properties: - - interrupts: Must contain a reference to the BSC interrupt, if available. - - clocks: Must contain a reference to the functional clock, if available. - - power-domains: Must contain a reference to the PM domain, if available. - - -Example: - - bsc: bus@fec10000 { - compatible = "renesas,bsc-sh73a0", "renesas,bsc", - "simple-pm-bus"; - #address-cells = <1>; - #size-cells = <1>; - ranges = <0 0 0x20000000>; - reg = <0xfec10000 0x400>; - interrupts = <0 39 IRQ_TYPE_LEVEL_HIGH>; - clocks = <&zb_clk>; - power-domains = <&pd_a4s>; - }; diff --git a/Documentation/devicetree/bindings/bus/renesas,bsc.yaml b/Documentation/devicetree/bindings/bus/renesas,bsc.yaml new file mode 100644 index 000000000000..7d10b62a52d5 --- /dev/null +++ b/Documentation/devicetree/bindings/bus/renesas,bsc.yaml @@ -0,0 +1,60 @@ +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/bus/renesas,bsc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas Bus State Controller (BSC) + +maintainers: + - Geert Uytterhoeven + +description: | + The Renesas Bus State Controller (BSC, sometimes called "LBSC within Bus + Bridge", or "External Bus Interface") can be found in several Renesas ARM + SoCs. It provides an external bus for connecting multiple external + devices to the SoC, driving several chip select lines, for e.g. NOR + FLASH, Ethernet and USB. + + While the BSC is a fairly simple memory-mapped bus, it may be part of a + PM domain, and may have a gateable functional clock. Before a device + connected to the BSC can be accessed, the PM domain containing the BSC + must be powered on, and the functional clock driving the BSC must be + enabled. + + The bindings for the BSC extend the bindings for "simple-pm-bus". + +allOf: + - $ref: simple-pm-bus.yaml# + +properties: + compatible: + items: + - enum: + - renesas,bsc-r8a73a4 # R-Mobile APE6 (r8a73a4) + - renesas,bsc-sh73a0 # SH-Mobile AG5 (sh73a0) + - const: renesas,bsc + - {} # simple-pm-bus, but not listed here to avoid false select + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + +required: + - reg + +examples: + - | + #include + + bsc: bus@fec10000 { + compatible = "renesas,bsc-sh73a0", "renesas,bsc", "simple-pm-bus"; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0 0x20000000>; + reg = <0xfec10000 0x400>; + interrupts = <0 39 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&zb_clk>; + power-domains = <&pd_a4s>; + }; From patchwork Tue Sep 24 09:36:09 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 11158345 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4C74E17EE for ; Tue, 24 Sep 2019 09:37:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3521C2146E for ; Tue, 24 Sep 2019 09:37:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2504279AbfIXJhA (ORCPT ); Tue, 24 Sep 2019 05:37:00 -0400 Received: from kirsty.vergenet.net ([202.4.237.240]:42618 "EHLO kirsty.vergenet.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2504273AbfIXJhA (ORCPT ); Tue, 24 Sep 2019 05:37:00 -0400 Received: from reginn.horms.nl (watermunt.horms.nl [80.127.179.77]) by kirsty.vergenet.net (Postfix) with ESMTPA id 53A2925BDE1; Tue, 24 Sep 2019 19:36:51 +1000 (AEST) Received: by reginn.horms.nl (Postfix, from userid 7100) id 3D647944438; Tue, 24 Sep 2019 11:36:49 +0200 (CEST) From: Simon Horman To: Rob Herring , Mark Rutland , Andy Gross , Geert Uytterhoeven Cc: Magnus Damm , Yoshihiro Kaneko , devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Simon Horman Subject: [PATCH v3 3/3] arm64: dts: qcom: msm8996: Update simple-pm-bus node name to 'bus' Date: Tue, 24 Sep 2019 11:36:09 +0200 Message-Id: <20190924093609.22895-4-horms+renesas@verge.net.au> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20190924093609.22895-1-horms+renesas@verge.net.au> References: <20190924093609.22895-1-horms+renesas@verge.net.au> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Update simple-pm-bus node name from 'agnoc' to 'bus' reflecting the proposed binding description in json-schema which in turn reflects the ePAR standard - "the name of a node should be somewhat generic, reflecting the function of the device and not its precise programming model." Also drop the unit address as there is neither a reg property nor non-empty ranges. Signed-off-by: Simon Horman Signed-off-by: Simon Horman --- v2 * New patch --- arch/arm64/boot/dts/qcom/msm8996.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/qcom/msm8996.dtsi b/arch/arm64/boot/dts/qcom/msm8996.dtsi index 96c0a481f454..99f376ebd27e 100644 --- a/arch/arm64/boot/dts/qcom/msm8996.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8996.dtsi @@ -1373,7 +1373,7 @@ clock-names = "iface", "bus"; }; - agnoc@0 { + bus { power-domains = <&gcc AGGRE0_NOC_GDSC>; compatible = "simple-pm-bus"; #address-cells = <1>;