linux-kernel - [PATCH v8 08/13] arm64: dts: st: add RIFSC as an access controller for STM32MP25x boards

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Message-ID: <20231212152356.345703-9-gatien.chevallier@foss.st.com>
Date:   Tue, 12 Dec 2023 16:23:51 +0100
From:   Gatien Chevallier <gatien.chevallier@...s.st.com>
To:     <Oleksii_Moisieiev@...m.com>, <gregkh@...uxfoundation.org>,
        <herbert@...dor.apana.org.au>, <davem@...emloft.net>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <conor+dt@...nel.org>, <alexandre.torgue@...s.st.com>,
        <vkoul@...nel.org>, <jic23@...nel.org>,
        <olivier.moysan@...s.st.com>, <arnaud.pouliquen@...s.st.com>,
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        <andi.shyti@...nel.org>, <ulf.hansson@...aro.org>,
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        <wg@...ndegger.com>, <mkl@...gutronix.de>
CC:     <linux-crypto@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <dmaengine@...r.kernel.org>,
        <linux-i2c@...r.kernel.org>, <linux-iio@...r.kernel.org>,
        <alsa-devel@...a-project.org>, <linux-media@...r.kernel.org>,
        <linux-mmc@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-phy@...ts.infradead.org>, <linux-serial@...r.kernel.org>,
        <linux-spi@...r.kernel.org>, <linux-usb@...r.kernel.org>,
        Gatien Chevallier <gatien.chevallier@...s.st.com>
Subject: [PATCH v8 08/13] arm64: dts: st: add RIFSC as an access controller for STM32MP25x boards

RIFSC is a firewall controller. Add "st,stm32mp25-rifsc" compatible and
reference RIFSC as an access-control-provider. Keep "simple-bus"
compatible backward compatibility.

Signed-off-by: Gatien Chevallier <gatien.chevallier@...s.st.com>
---

Changes in V8:
    	- Keep "simple-bus" compatible

Changes in V6:
    	- Renamed access-controller to access-controllers
    	- Removal of access-control-provider property

Changes in V5:
    	- Renamed feature-domain* to access-control*

Changes in V2:
	- Fix rifsc node name
	- Move the "ranges" property under the
	  "feature-domains" one

 arch/arm64/boot/dts/st/stm32mp251.dtsi | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/st/stm32mp251.dtsi b/arch/arm64/boot/dts/st/stm32mp251.dtsi
index 124403f5f1f4..3b0d6dced81f 100644
--- a/arch/arm64/boot/dts/st/stm32mp251.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp251.dtsi
@@ -111,11 +111,12 @@ soc@0 {
 		interrupt-parent = <&intc>;
 		ranges = <0x0 0x0 0x0 0x80000000>;
 
-		rifsc: rifsc-bus@...80000 {
-			compatible = "simple-bus";
+		rifsc: bus@...80000 {
+			compatible = "st,stm32mp25-rifsc", "simple-bus";
 			reg = <0x42080000 0x1000>;
 			#address-cells = <1>;
 			#size-cells = <1>;
+			#access-controller-cells = <1>;
 			ranges;
 
 			usart2: serial@...e0000 {
@@ -123,6 +124,7 @@ usart2: serial@...e0000 {
 				reg = <0x400e0000 0x400>;
 				interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&ck_flexgen_08>;
+				access-controllers = <&rifsc 32>;
 				status = "disabled";
 			};
 
@@ -136,6 +138,7 @@ sdmmc1: mmc@...20000 {
 				cap-sd-highspeed;
 				cap-mmc-highspeed;
 				max-frequency = <120000000>;
+				access-controllers = <&rifsc 92>;
 				status = "disabled";
 			};
 		};
-- 
2.25.1