From: <gabriel.fernandez@foss.st.com>
To: Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: <devicetree@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <gabriel.fernandez@foss.st.com>
Subject: [PATCH] arm64: dts: st: add RCC support for STM32MP21
Date: Thu, 8 Oct 2026 10:04:37 +0200 [thread overview]
Message-ID: <20261008080437.20270-1-gabriel.fernandez@foss.st.com> (raw)
From: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
Add the RCC node in STM32MP21 device tree files to provide clock and
reset controller support for peripherals.
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
---
arch/arm64/boot/dts/st/stm32mp211.dtsi | 95 ++++++++++++++++++++++----
1 file changed, 82 insertions(+), 13 deletions(-)
diff --git a/arch/arm64/boot/dts/st/stm32mp211.dtsi b/arch/arm64/boot/dts/st/stm32mp211.dtsi
index 4bfd58b26b51..599fe7aaa414 100644
--- a/arch/arm64/boot/dts/st/stm32mp211.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp211.dtsi
@@ -3,7 +3,9 @@
* Copyright (C) STMicroelectronics 2025 - All Rights Reserved
* Author: Alexandre Torgue <alexandre.torgue@foss.st.com> for STMicroelectronics.
*/
+#include <dt-bindings/clock/st,stm32mp21-rcc.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/reset/st,stm32mp21-rcc.h>
/ {
#address-cells = <2>;
@@ -34,18 +36,6 @@ arm_wdt: watchdog {
status = "disabled";
};
- ck_flexgen_08: clock-64000000 {
- compatible = "fixed-clock";
- #clock-cells = <0>;
- clock-frequency = <64000000>;
- };
-
- ck_flexgen_51: clock-200000000 {
- compatible = "fixed-clock";
- #clock-cells = <0>;
- clock-frequency = <200000000>;
- };
-
firmware {
optee {
compatible = "linaro,optee-tz";
@@ -106,7 +96,7 @@ usart2: serial@400e0000 {
compatible = "st,stm32h7-uart";
reg = <0x400e0000 0x0 0x400>;
interrupts = <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&ck_flexgen_08>;
+ clocks = <&rcc CK_KER_USART2>;
access-controllers = <&rifsc 32>;
status = "disabled";
};
@@ -128,6 +118,85 @@ package_otp@1e8 {
};
};
+ rcc: clock-controller@44200000 {
+ compatible = "st,stm32mp21-rcc";
+ reg = <0x44200000 0x0 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_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_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_29>,
+ <&scmi_clk CK_SCMI_FLEXGEN_30>,
+ <&scmi_clk CK_SCMI_FLEXGEN_31>,
+ <&scmi_clk CK_SCMI_FLEXGEN_33>,
+ <&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_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_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_APB5>,
+ <&scmi_clk CK_SCMI_ICN_APBDBG>,
+ <&scmi_clk CK_SCMI_TIMG1>,
+ <&scmi_clk CK_SCMI_TIMG2>;
+ access-controllers = <&rifsc 156>;
+ };
+
syscfg: syscon@44230000 {
compatible = "st,stm32mp21-syscfg", "syscon";
reg = <0x44230000 0x0 0x10000>;
base-commit: f831584128ac2a36fb4fa62fe106793d08c2dbf1
--
2.43.0
reply other threads:[~2026-10-08 8:05 UTC|newest]
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