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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 v3 5/5] arm64: dts: st: add rcc support in stm32mp251
Date:   Wed, 22 Nov 2023 14:21:56 +0100
Message-ID: <20231122132156.158103-6-gabriel.fernandez@foss.st.com>
In-Reply-To: <20231122132156.158103-1-gabriel.fernandez@foss.st.com>
References: <20231122132156.158103-1-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 STM32MP251.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
---
 arch/arm64/boot/dts/st/stm32mp251.dtsi | 59 ++++++++++++++------------
 1 file changed, 31 insertions(+), 28 deletions(-)

diff --git a/arch/arm64/boot/dts/st/stm32mp251.dtsi b/arch/arm64/boot/dts/st/stm32mp251.dtsi
index 124403f5f1f4..dfbdb3a773e4 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>;
@@ -35,22 +37,10 @@ arm_wdt: watchdog {
 	};
 
 	clocks {
-		ck_flexgen_08: ck-flexgen-08 {
+		clk_rcbsec: clk-rcbsec {
 			#clock-cells = <0>;
 			compatible = "fixed-clock";
-			clock-frequency = <100000000>;
-		};
-
-		ck_flexgen_51: ck-flexgen-51 {
-			#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>;
+			clock-frequency = <64000000>;
 		};
 	};
 
@@ -122,7 +112,7 @@ 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";
 			};
 
@@ -131,7 +121,7 @@ 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";
 				cap-sd-highspeed;
 				cap-mmc-highspeed;
@@ -140,6 +130,19 @@ sdmmc1: mmc@48220000 {
 			};
 		};
 
+		rcc: clock-controller@44200000 {
+			compatible = "st,stm32mp25-rcc";
+			reg = <0x44200000 0x10000>;
+			#clock-cells = <1>;
+			#reset-cells = <1>;
+			clock-names = "hse", "hsi", "msi", "lse", "lsi";
+			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>;
+		};
+
 		syscfg: syscon@44230000 {
 			compatible = "st,stm32mp25-syscfg", "syscon";
 			reg = <0x44230000 0x10000>;
@@ -158,7 +161,7 @@ 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";
 			};
@@ -169,7 +172,7 @@ 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";
 			};
@@ -180,7 +183,7 @@ 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";
 			};
@@ -191,7 +194,7 @@ 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";
 			};
@@ -202,7 +205,7 @@ 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";
 			};
@@ -213,7 +216,7 @@ 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";
 			};
@@ -224,7 +227,7 @@ 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";
 			};
@@ -235,7 +238,7 @@ 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";
 			};
@@ -246,7 +249,7 @@ 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";
 			};
@@ -257,7 +260,7 @@ 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";
 			};
@@ -268,7 +271,7 @@ 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";
 			};
@@ -287,7 +290,7 @@ 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";
-- 
2.25.1