Thread (9 messages) 9 messages, 2 authors, 2016-10-11
STALE3520d
Revisions (3)
  1. v1 current
  2. v2 [diff vs current]
  3. v3 [diff vs current]

[PATCH 2/6] ARM: dts: stm32f429: add LSI and LSE clocks

From: gabriel.fernandez at st.com <hidden>
Date: 2016-09-30 14:27:25
Also in: linux-clk, linux-devicetree, lkml
Subsystem: the rest · Maintainer: Linus Torvalds

From: Gabriel Fernandez <redacted>

This patch adds lsi / lse oscillators. These clocks can be use by
RTC clocks.
The clock drivers needs to disable the power domain write protection using
syscon / regmap to enable these clocks.

Signed-off-by: Gabriel Fernandez <redacted>
---
 arch/arm/boot/dts/stm32f429.dtsi | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
diff --git a/arch/arm/boot/dts/stm32f429.dtsi b/arch/arm/boot/dts/stm32f429.dtsi
index 35df462..0979fb6 100644
--- a/arch/arm/boot/dts/stm32f429.dtsi
+++ b/arch/arm/boot/dts/stm32f429.dtsi
@@ -55,6 +55,18 @@
 			compatible = "fixed-clock";
 			clock-frequency = <0>;
 		};
+
+		clk-lse {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <32768>;
+		};
+
+		clk-lsi {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <32000>;
+		};
 	};
 
 	soc {
@@ -176,6 +188,11 @@
 			reg = <0x40013800 0x400>;
 		};
 
+		pwrcfg: power-config at 40007000 {
+			compatible = "syscon";
+			reg = <0x40007000 0x400>;
+		};
+
 		pin-controller {
 			#address-cells = <1>;
 			#size-cells = <1>;
@@ -330,6 +347,7 @@
 			compatible = "st,stm32f42xx-rcc", "st,stm32-rcc";
 			reg = <0x40023800 0x400>;
 			clocks = <&clk_hse>;
+			st,syscfg = <&pwrcfg>;
 		};
 
 		dma1: dma-controller at 40026000 {
-- 
1.9.1
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