ARM: dts: stm32f429: Adopt STM32F4 clock driver

New bindings and driver have been created for STM32F42xxx series parts.
This patch integrates these changes.

Note: Earlier device tree blobs (those without st,stm32f42xxx
      compatibles for the rcc) could still be used to boot basic
      systems. Such systems rely on the bootloader to configure the
      clock gates for vital periperhals.

Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Signed-off-by: Maxime Coquelin <mcoquelin.stm32@gmail.com>

diff --git a/arch/arm/boot/dts/stm32f429-disco.dts b/arch/arm/boot/dts/stm32f429-disco.dts
index 6b9aa59..8bd3de5 100644 (file)
--- a/arch/arm/boot/dts/stm32f429-disco.dts
+++ b/arch/arm/boot/dts/stm32f429-disco.dts
@@ -66,6 +66,10 @@
        };
 };
 
+&clk_hse {
+       clock-frequency = <8000000>;
+};
+
 &usart1 {
        status = "okay";
 };

diff --git a/arch/arm/boot/dts/stm32f429.dtsi b/arch/arm/boot/dts/stm32f429.dtsi
index aa73b4f..d78a481 100644 (file)
--- a/arch/arm/boot/dts/stm32f429.dtsi
+++ b/arch/arm/boot/dts/stm32f429.dtsi
@@ -49,48 +49,10 @@
 
 / {
        clocks {
-               clk_sysclk: clk-sysclk {
+               clk_hse: clk-hse {
                        #clock-cells = <0>;
                        compatible = "fixed-clock";
-                       clock-frequency = <180000000>;
-               };
-
-               clk_hclk: clk-hclk {
-                       #clock-cells = <0>;
-                       compatible = "fixed-clock";
-                       clock-frequency = <180000000>;
-               };
-
-               clk_pclk1: clk-pclk1 {
-                       #clock-cells = <0>;
-                       compatible = "fixed-clock";
-                       clock-frequency = <45000000>;
-               };
-
-               clk_pclk2: clk-pclk2 {
-                       #clock-cells = <0>;
-                       compatible = "fixed-clock";
-                       clock-frequency = <90000000>;
-               };
-
-               clk_pmtr1: clk-pmtr1 {
-                       #clock-cells = <0>;
-                       compatible = "fixed-clock";
-                       clock-frequency = <90000000>;
-               };
-
-               clk_pmtr2: clk-pmtr2 {
-                       #clock-cells = <0>;
-                       compatible = "fixed-clock";
-                       clock-frequency = <180000000>;
-               };
-
-               clk_systick: clk-systick {
-                       compatible = "fixed-factor-clock";
-                       clocks = <&clk_hclk>;
-                       #clock-cells = <0>;
-                       clock-div = <8>;
-                       clock-mult = <1>;
+                       clock-frequency = <0>;
                };
        };
 
@@ -99,7 +61,7 @@
                        compatible = "st,stm32-timer";
                        reg = <0x40000000 0x400>;
                        interrupts = <28>;
-                       clocks = <&clk_pmtr1>;
+                       clocks = <&rcc 0 128>;
                        status = "disabled";
                };
 
@@ -107,7 +69,7 @@
                        compatible = "st,stm32-timer";
                        reg = <0x40000400 0x400>;
                        interrupts = <29>;
-                       clocks = <&clk_pmtr1>;
+                       clocks = <&rcc 0 129>;
                        status = "disabled";
                };
 
@@ -115,7 +77,7 @@
                        compatible = "st,stm32-timer";
                        reg = <0x40000800 0x400>;
                        interrupts = <30>;
-                       clocks = <&clk_pmtr1>;
+                       clocks = <&rcc 0 130>;
                        status = "disabled";
                };
 
@@ -123,14 +85,14 @@
                        compatible = "st,stm32-timer";
                        reg = <0x40000c00 0x400>;
                        interrupts = <50>;
-                       clocks = <&clk_pmtr1>;
+                       clocks = <&rcc 0 131>;
                };
 
                timer6: timer@40001000 {
                        compatible = "st,stm32-timer";
                        reg = <0x40001000 0x400>;
                        interrupts = <54>;
-                       clocks = <&clk_pmtr1>;
+                       clocks = <&rcc 0 132>;
                        status = "disabled";
                };
 
@@ -138,7 +100,7 @@
                        compatible = "st,stm32-timer";
                        reg = <0x40001400 0x400>;
                        interrupts = <55>;
-                       clocks = <&clk_pmtr1>;
+                       clocks = <&rcc 0 133>;
                        status = "disabled";
                };
 
@@ -146,7 +108,7 @@
                        compatible = "st,stm32-usart", "st,stm32-uart";
                        reg = <0x40004400 0x400>;
                        interrupts = <38>;
-                       clocks = <&clk_pclk1>;
+                       clocks =  <&rcc 0 145>;
                        status = "disabled";
                };
 
@@ -154,7 +116,7 @@
                        compatible = "st,stm32-usart", "st,stm32-uart";
                        reg = <0x40004800 0x400>;
                        interrupts = <39>;
-                       clocks = <&clk_pclk1>;
+                       clocks = <&rcc 0 146>;
                        status = "disabled";
                };
 
@@ -162,7 +124,7 @@
                        compatible = "st,stm32-uart";
                        reg = <0x40004c00 0x400>;
                        interrupts = <52>;
-                       clocks = <&clk_pclk1>;
+                       clocks = <&rcc 0 147>;
                        status = "disabled";
                };
 
@@ -170,7 +132,7 @@
                        compatible = "st,stm32-uart";
                        reg = <0x40005000 0x400>;
                        interrupts = <53>;
-                       clocks = <&clk_pclk1>;
+                       clocks = <&rcc 0 148>;
                        status = "disabled";
                };
 
@@ -178,7 +140,7 @@
                        compatible = "st,stm32-usart", "st,stm32-uart";
                        reg = <0x40007800 0x400>;
                        interrupts = <82>;
-                       clocks = <&clk_pclk1>;
+                       clocks = <&rcc 0 158>;
                        status = "disabled";
                };
 
@@ -186,7 +148,7 @@
                        compatible = "st,stm32-usart", "st,stm32-uart";
                        reg = <0x40007c00 0x400>;
                        interrupts = <83>;
-                       clocks = <&clk_pclk1>;
+                       clocks = <&rcc 0 159>;
                        status = "disabled";
                };
 
@@ -194,7 +156,7 @@
                        compatible = "st,stm32-usart", "st,stm32-uart";
                        reg = <0x40011000 0x400>;
                        interrupts = <37>;
-                       clocks = <&clk_pclk2>;
+                       clocks = <&rcc 0 164>;
                        status = "disabled";
                };
 
@@ -202,13 +164,20 @@
                        compatible = "st,stm32-usart", "st,stm32-uart";
                        reg = <0x40011400 0x400>;
                        interrupts = <71>;
-                       clocks = <&clk_pclk2>;
+                       clocks = <&rcc 0 165>;
                        status = "disabled";
                };
+
+               rcc: rcc@40023810 {
+                       #clock-cells = <2>;
+                       compatible = "st,stm32f42xx-rcc", "st,stm32-rcc";
+                       reg = <0x40023800 0x400>;
+                       clocks = <&clk_hse>;
+               };
        };
 };
 
 &systick {
-       clocks = <&clk_systick>;
+       clocks = <&rcc 1 0>;
        status = "okay";
 };