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From: <gabriel.fernandez@foss.st.com>
To: Michael Turquette <mturquette@baylibre.com>,
        Stephen Boyd
	<sboyd@kernel.org>, Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Maxime Coquelin <mcoquelin.stm32@gmail.com>,
        Alexandre Torgue
	<alexandre.torgue@foss.st.com>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Gabriel Fernandez <gabriel.fernandez@foss.st.com>
CC: <linux-clk@vger.kernel.org>, <devicetree@vger.kernel.org>,
        <linux-stm32@st-md-mailman.stormreply.com>,
        <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH v9 4/4] arm64: dts: st: add rcc support for STM32MP25
Date: Thu, 8 Feb 2024 15:23:01 +0100
Message-ID: <20240208142301.155698-5-gabriel.fernandez@foss.st.com>
In-Reply-To: <20240208142301.155698-1-gabriel.fernandez@foss.st.com>
References: <20240208142301.155698-1-gabriel.fernandez@foss.st.com>
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From: Gabriel Fernandez <gabriel.fernandez@foss.st.com>

Add RCC support to manage clocks and resets on the STM32MP25.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
---
 arch/arm64/boot/dts/st/stm32mp251.dtsi | 144 ++++++++++++++++++-------
 arch/arm64/boot/dts/st/stm32mp255.dtsi |   4 +-
 2 files changed, 110 insertions(+), 38 deletions(-)

diff --git a/arch/arm64/boot/dts/st/stm32mp251.dtsi b/arch/arm64/boot/dts/st/stm32mp251.dtsi
index 5dd4f3580a60..15b79d26d1c6 100644
--- a/arch/arm64/boot/dts/st/stm32mp251.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp251.dtsi
@@ -3,7 +3,9 @@
  * Copyright (C) STMicroelectronics 2023 - All Rights Reserved
  * Author: Alexandre Torgue <alexandre.torgue@foss.st.com> for STMicroelectronics.
  */
+#include <dt-bindings/clock/st,stm32mp25-rcc.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/reset/st,stm32mp25-rcc.h>
 
 / {
 	#address-cells = <2>;
@@ -35,34 +37,16 @@ arm_wdt: watchdog {
 	};
 
 	clocks {
-		ck_flexgen_08: ck-flexgen-08 {
+		clk_dsi_txbyte: txbyteclk {
 			#clock-cells = <0>;
 			compatible = "fixed-clock";
-			clock-frequency = <100000000>;
+			clock-frequency = <0>;
 		};
 
-		ck_flexgen_51: ck-flexgen-51 {
+		clk_rcbsec: clk-rcbsec {
 			#clock-cells = <0>;
 			compatible = "fixed-clock";
-			clock-frequency = <200000000>;
-		};
-
-		ck_icn_ls_mcu: ck-icn-ls-mcu {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <200000000>;
-		};
-
-		ck_icn_p_vdec: ck-icn-p-vdec {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <200000000>;
-		};
-
-		ck_icn_p_venc: ck-icn-p-venc {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <200000000>;
+			clock-frequency = <64000000>;
 		};
 	};
 
@@ -134,7 +118,7 @@ usart2: serial@400e0000 {
 				compatible = "st,stm32h7-uart";
 				reg = <0x400e0000 0x400>;
 				interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>;
-				clocks = <&ck_flexgen_08>;
+				clocks = <&rcc CK_KER_USART2>;
 				status = "disabled";
 			};
 
@@ -143,8 +127,9 @@ sdmmc1: mmc@48220000 {
 				arm,primecell-periphid = <0x00353180>;
 				reg = <0x48220000 0x400>, <0x44230400 0x8>;
 				interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
-				clocks = <&ck_flexgen_51>;
+				clocks = <&rcc CK_KER_SDMMC1 >;
 				clock-names = "apb_pclk";
+				resets = <&rcc SDMMC1_R>;
 				cap-sd-highspeed;
 				cap-mmc-highspeed;
 				max-frequency = <120000000>;
@@ -168,6 +153,93 @@ package_otp@1e8 {
 			};
 		};
 
+		rcc: clock-controller@44200000 {
+			compatible = "st,stm32mp25-rcc";
+			reg = <0x44200000 0x10000>;
+			#clock-cells = <1>;
+			#reset-cells = <1>;
+			clocks = <&scmi_clk CK_SCMI_HSE>,
+				<&scmi_clk CK_SCMI_HSI>,
+				<&scmi_clk CK_SCMI_MSI>,
+				<&scmi_clk CK_SCMI_LSE>,
+				<&scmi_clk CK_SCMI_LSI>,
+				<&scmi_clk CK_SCMI_HSE_DIV2>,
+				<&scmi_clk CK_SCMI_ICN_HS_MCU>,
+				<&scmi_clk CK_SCMI_ICN_LS_MCU>,
+				<&scmi_clk CK_SCMI_ICN_SDMMC>,
+				<&scmi_clk CK_SCMI_ICN_DDR>,
+				<&scmi_clk CK_SCMI_ICN_DISPLAY>,
+				<&scmi_clk CK_SCMI_ICN_HSL>,
+				<&scmi_clk CK_SCMI_ICN_NIC>,
+				<&scmi_clk CK_SCMI_ICN_VID>,
+				<&scmi_clk CK_SCMI_FLEXGEN_07>,
+				<&scmi_clk CK_SCMI_FLEXGEN_08>,
+				<&scmi_clk CK_SCMI_FLEXGEN_09>,
+				<&scmi_clk CK_SCMI_FLEXGEN_10>,
+				<&scmi_clk CK_SCMI_FLEXGEN_11>,
+				<&scmi_clk CK_SCMI_FLEXGEN_12>,
+				<&scmi_clk CK_SCMI_FLEXGEN_13>,
+				<&scmi_clk CK_SCMI_FLEXGEN_14>,
+				<&scmi_clk CK_SCMI_FLEXGEN_15>,
+				<&scmi_clk CK_SCMI_FLEXGEN_16>,
+				<&scmi_clk CK_SCMI_FLEXGEN_17>,
+				<&scmi_clk CK_SCMI_FLEXGEN_18>,
+				<&scmi_clk CK_SCMI_FLEXGEN_19>,
+				<&scmi_clk CK_SCMI_FLEXGEN_20>,
+				<&scmi_clk CK_SCMI_FLEXGEN_21>,
+				<&scmi_clk CK_SCMI_FLEXGEN_22>,
+				<&scmi_clk CK_SCMI_FLEXGEN_23>,
+				<&scmi_clk CK_SCMI_FLEXGEN_24>,
+				<&scmi_clk CK_SCMI_FLEXGEN_25>,
+				<&scmi_clk CK_SCMI_FLEXGEN_26>,
+				<&scmi_clk CK_SCMI_FLEXGEN_27>,
+				<&scmi_clk CK_SCMI_FLEXGEN_28>,
+				<&scmi_clk CK_SCMI_FLEXGEN_29>,
+				<&scmi_clk CK_SCMI_FLEXGEN_30>,
+				<&scmi_clk CK_SCMI_FLEXGEN_31>,
+				<&scmi_clk CK_SCMI_FLEXGEN_32>,
+				<&scmi_clk CK_SCMI_FLEXGEN_33>,
+				<&scmi_clk CK_SCMI_FLEXGEN_34>,
+				<&scmi_clk CK_SCMI_FLEXGEN_35>,
+				<&scmi_clk CK_SCMI_FLEXGEN_36>,
+				<&scmi_clk CK_SCMI_FLEXGEN_37>,
+				<&scmi_clk CK_SCMI_FLEXGEN_38>,
+				<&scmi_clk CK_SCMI_FLEXGEN_39>,
+				<&scmi_clk CK_SCMI_FLEXGEN_40>,
+				<&scmi_clk CK_SCMI_FLEXGEN_41>,
+				<&scmi_clk CK_SCMI_FLEXGEN_42>,
+				<&scmi_clk CK_SCMI_FLEXGEN_43>,
+				<&scmi_clk CK_SCMI_FLEXGEN_44>,
+				<&scmi_clk CK_SCMI_FLEXGEN_45>,
+				<&scmi_clk CK_SCMI_FLEXGEN_46>,
+				<&scmi_clk CK_SCMI_FLEXGEN_47>,
+				<&scmi_clk CK_SCMI_FLEXGEN_48>,
+				<&scmi_clk CK_SCMI_FLEXGEN_49>,
+				<&scmi_clk CK_SCMI_FLEXGEN_50>,
+				<&scmi_clk CK_SCMI_FLEXGEN_51>,
+				<&scmi_clk CK_SCMI_FLEXGEN_52>,
+				<&scmi_clk CK_SCMI_FLEXGEN_53>,
+				<&scmi_clk CK_SCMI_FLEXGEN_54>,
+				<&scmi_clk CK_SCMI_FLEXGEN_55>,
+				<&scmi_clk CK_SCMI_FLEXGEN_56>,
+				<&scmi_clk CK_SCMI_FLEXGEN_57>,
+				<&scmi_clk CK_SCMI_FLEXGEN_58>,
+				<&scmi_clk CK_SCMI_FLEXGEN_59>,
+				<&scmi_clk CK_SCMI_FLEXGEN_60>,
+				<&scmi_clk CK_SCMI_FLEXGEN_61>,
+				<&scmi_clk CK_SCMI_FLEXGEN_62>,
+				<&scmi_clk CK_SCMI_FLEXGEN_63>,
+				<&scmi_clk CK_SCMI_ICN_APB1>,
+				<&scmi_clk CK_SCMI_ICN_APB2>,
+				<&scmi_clk CK_SCMI_ICN_APB3>,
+				<&scmi_clk CK_SCMI_ICN_APB4>,
+				<&scmi_clk CK_SCMI_ICN_APBDBG>,
+				<&scmi_clk CK_SCMI_TIMG1>,
+				<&scmi_clk CK_SCMI_TIMG2>,
+				<&scmi_clk CK_SCMI_PLL3>,
+				<&clk_dsi_txbyte>;
+		};
+
 		syscfg: syscon@44230000 {
 			compatible = "st,stm32mp25-syscfg", "syscon";
 			reg = <0x44230000 0x10000>;
@@ -186,7 +258,7 @@ gpioa: gpio@44240000 {
 				interrupt-controller;
 				#interrupt-cells = <2>;
 				reg = <0x0 0x400>;
-				clocks = <&ck_icn_ls_mcu>;
+				clocks = <&scmi_clk CK_SCMI_GPIOA>;
 				st,bank-name = "GPIOA";
 				status = "disabled";
 			};
@@ -197,7 +269,7 @@ gpiob: gpio@44250000 {
 				interrupt-controller;
 				#interrupt-cells = <2>;
 				reg = <0x10000 0x400>;
-				clocks = <&ck_icn_ls_mcu>;
+				clocks = <&scmi_clk CK_SCMI_GPIOB>;
 				st,bank-name = "GPIOB";
 				status = "disabled";
 			};
@@ -208,7 +280,7 @@ gpioc: gpio@44260000 {
 				interrupt-controller;
 				#interrupt-cells = <2>;
 				reg = <0x20000 0x400>;
-				clocks = <&ck_icn_ls_mcu>;
+				clocks = <&scmi_clk CK_SCMI_GPIOC>;
 				st,bank-name = "GPIOC";
 				status = "disabled";
 			};
@@ -219,7 +291,7 @@ gpiod: gpio@44270000 {
 				interrupt-controller;
 				#interrupt-cells = <2>;
 				reg = <0x30000 0x400>;
-				clocks = <&ck_icn_ls_mcu>;
+				clocks = <&scmi_clk CK_SCMI_GPIOD>;
 				st,bank-name = "GPIOD";
 				status = "disabled";
 			};
@@ -230,7 +302,7 @@ gpioe: gpio@44280000 {
 				interrupt-controller;
 				#interrupt-cells = <2>;
 				reg = <0x40000 0x400>;
-				clocks = <&ck_icn_ls_mcu>;
+				clocks = <&scmi_clk CK_SCMI_GPIOE>;
 				st,bank-name = "GPIOE";
 				status = "disabled";
 			};
@@ -241,7 +313,7 @@ gpiof: gpio@44290000 {
 				interrupt-controller;
 				#interrupt-cells = <2>;
 				reg = <0x50000 0x400>;
-				clocks = <&ck_icn_ls_mcu>;
+				clocks = <&scmi_clk CK_SCMI_GPIOF>;
 				st,bank-name = "GPIOF";
 				status = "disabled";
 			};
@@ -252,7 +324,7 @@ gpiog: gpio@442a0000 {
 				interrupt-controller;
 				#interrupt-cells = <2>;
 				reg = <0x60000 0x400>;
-				clocks = <&ck_icn_ls_mcu>;
+				clocks = <&scmi_clk CK_SCMI_GPIOG>;
 				st,bank-name = "GPIOG";
 				status = "disabled";
 			};
@@ -263,7 +335,7 @@ gpioh: gpio@442b0000 {
 				interrupt-controller;
 				#interrupt-cells = <2>;
 				reg = <0x70000 0x400>;
-				clocks = <&ck_icn_ls_mcu>;
+				clocks = <&scmi_clk CK_SCMI_GPIOH>;
 				st,bank-name = "GPIOH";
 				status = "disabled";
 			};
@@ -274,7 +346,7 @@ gpioi: gpio@442c0000 {
 				interrupt-controller;
 				#interrupt-cells = <2>;
 				reg = <0x80000 0x400>;
-				clocks = <&ck_icn_ls_mcu>;
+				clocks = <&scmi_clk CK_SCMI_GPIOI>;
 				st,bank-name = "GPIOI";
 				status = "disabled";
 			};
@@ -285,7 +357,7 @@ gpioj: gpio@442d0000 {
 				interrupt-controller;
 				#interrupt-cells = <2>;
 				reg = <0x90000 0x400>;
-				clocks = <&ck_icn_ls_mcu>;
+				clocks = <&scmi_clk CK_SCMI_GPIOJ>;
 				st,bank-name = "GPIOJ";
 				status = "disabled";
 			};
@@ -296,7 +368,7 @@ gpiok: gpio@442e0000 {
 				interrupt-controller;
 				#interrupt-cells = <2>;
 				reg = <0xa0000 0x400>;
-				clocks = <&ck_icn_ls_mcu>;
+				clocks = <&scmi_clk CK_SCMI_GPIOK>;
 				st,bank-name = "GPIOK";
 				status = "disabled";
 			};
@@ -315,7 +387,7 @@ gpioz: gpio@46200000 {
 				interrupt-controller;
 				#interrupt-cells = <2>;
 				reg = <0 0x400>;
-				clocks = <&ck_icn_ls_mcu>;
+				clocks = <&scmi_clk CK_SCMI_GPIOZ>;
 				st,bank-name = "GPIOZ";
 				st,bank-ioport = <11>;
 				status = "disabled";
diff --git a/arch/arm64/boot/dts/st/stm32mp255.dtsi b/arch/arm64/boot/dts/st/stm32mp255.dtsi
index 17f197c5b22b..d5175a1f339c 100644
--- a/arch/arm64/boot/dts/st/stm32mp255.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp255.dtsi
@@ -12,14 +12,14 @@ vdec: vdec@480d0000 {
 				compatible = "st,stm32mp25-vdec";
 				reg = <0x480d0000 0x3c8>;
 				interrupts = <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>;
-				clocks = <&ck_icn_p_vdec>;
+				clocks = <&rcc CK_BUS_VDEC>;
 			};
 
 			venc: venc@480e0000 {
 				compatible = "st,stm32mp25-venc";
 				reg = <0x480e0000 0x800>;
 				interrupts = <GIC_SPI 167 IRQ_TYPE_LEVEL_HIGH>;
-				clocks = <&ck_icn_ls_mcu>;
+				clocks = <&rcc CK_BUS_VENC>;
 			};
 		};
 	};
-- 
2.25.1