[PATCH v6 7/8] ARM: dts: stm32: add Timers driver for stm32f429 MCU

Benjamin Gaignard benjamin.gaignard at linaro.org
Tue Dec 13 01:15:21 PST 2016


2016-12-12 19:59 GMT+01:00 Rob Herring <robh at kernel.org>:
> On Fri, Dec 09, 2016 at 03:15:18PM +0100, Benjamin Gaignard wrote:
>> Add Timers and it sub-nodes into DT for stm32f429 family.
>>
>> version 6:
>> - split patch in two: one for SoC family and one for stm32f469
>>   discovery board.
>>
>> version 5:
>> - rename gptimer node to timers
>> - re-order timers node par addresses
>>
>> version 4:
>> - remove unwanted indexing in pwm@ and timer@ node name
>> - use "reg" instead of additional parameters to set timer
>>   configuration
>>
>> version 3:
>> - use "st,stm32-timer-trigger" in DT
>>
>> version 2:
>> - use parameters to describe hardware capabilities
>> - do not use references for pwm and iio timer subnodes
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard at st.com>
>> ---
>>  arch/arm/boot/dts/stm32f429.dtsi | 275 +++++++++++++++++++++++++++++++++++++++
>>  1 file changed, 275 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/stm32f429.dtsi b/arch/arm/boot/dts/stm32f429.dtsi
>> index bca491d..d0fb9cc 100644
>> --- a/arch/arm/boot/dts/stm32f429.dtsi
>> +++ b/arch/arm/boot/dts/stm32f429.dtsi
>> @@ -355,6 +355,21 @@
>>                                       slew-rate = <2>;
>>                               };
>>                       };
>> +
>> +                     pwm1_pins: pwm at 1 {
>
> No reg prop, so should not have a unit-address. Given the names in the
> define below, seems like "timer1" would be appropriate.
>
>> +                             pins {
>> +                                     pinmux = <STM32F429_PA8_FUNC_TIM1_CH1>,
>> +                                              <STM32F429_PB13_FUNC_TIM1_CH1N>,
>> +                                              <STM32F429_PB12_FUNC_TIM1_BKIN>;
>> +                             };
>> +                     };
>> +
>> +                     pwm3_pins: pwm at 3 {
>> +                             pins {
>> +                                     pinmux = <STM32F429_PB4_FUNC_TIM3_CH1>,
>> +                                              <STM32F429_PB5_FUNC_TIM3_CH2>;
>> +                             };
>> +                     };
>>               };
>>
>>               rcc: rcc at 40023810 {
>> @@ -426,6 +441,266 @@
>>                       interrupts = <80>;
>>                       clocks = <&rcc 0 38>;
>>               };
>> +
>> +             timers2: timers at 40000000 {
>
> timer at ...
>
> It may be more than just a timer, there's not a better generic name.
>
>> +                     #address-cells = <1>;
>> +                     #size-cells = <0>;
>> +                     compatible = "st,stm32-timers";
>> +                     reg = <0x40000000 0x400>;
>> +                     clocks = <&rcc 0 128>;
>> +                     clock-names = "clk_int";
>> +                     status = "disabled";
>> +
>> +                     pwm {
>> +                             compatible = "st,stm32-pwm";
>> +                             status = "disabled";
>> +                     };
>> +
>> +                     timer {
>> +                             compatible = "st,stm32-timer-trigger";
>> +                             reg = <1>;
>> +                             status = "disabled";
>> +                     };
>> +             };
>> +
>> +             timers3: timers at 40000400 {
>
> ditto
>
>> +                     #address-cells = <1>;
>> +                     #size-cells = <0>;
>> +                     compatible = "st,stm32-timers";
>> +                     reg = <0x40000400 0x400>;
>> +                     clocks = <&rcc 0 129>;
>> +                     clock-names = "clk_int";
>> +                     status = "disabled";
>> +
>> +                     pwm {
>> +                             compatible = "st,stm32-pwm";
>> +                             status = "disabled";
>> +                     };
>> +
>> +                     timer {
>> +                             compatible = "st,stm32-timer-trigger";
>> +                             reg = <2>;
>> +                             status = "disabled";
>> +                     };
>> +             };
>> +
>> +             timers4: timers at 40000800 {
>> +                     #address-cells = <1>;
>> +                     #size-cells = <0>;
>> +                     compatible = "st,stm32-timers";
>> +                     reg = <0x40000800 0x400>;
>> +                     clocks = <&rcc 0 130>;
>> +                     clock-names = "clk_int";
>> +                     status = "disabled";
>> +
>> +                     pwm {
>> +                             compatible = "st,stm32-pwm";
>> +                             status = "disabled";
>> +                     };
>> +
>> +                     timer {
>> +                             compatible = "st,stm32-timer-trigger";
>> +                             reg = <3>;
>> +                             status = "disabled";
>> +                     };
>> +             };
>> +
>> +             timers5: timers at 40000C00 {
>
> timer at ...
>
> And use lowercase hex.
>
>> +                     #address-cells = <1>;
>> +                     #size-cells = <0>;
>> +                     compatible = "st,stm32-timers";
>> +                     reg = <0x40000C00 0x400>;
>
> ditto
>
>> +                     clocks = <&rcc 0 131>;
>> +                     clock-names = "clk_int";
>> +                     status = "disabled";
>> +
>> +                     pwm {
>> +                             compatible = "st,stm32-pwm";
>> +                             status = "disabled";
>> +                     };
>> +
>> +                     timer {
>> +                             compatible = "st,stm32-timer-trigger";
>> +                             reg = <4>;
>> +                             status = "disabled";
>> +                     };
>> +             };
>> +
>> +             timers6: timers at 40001000 {
>> +                     #address-cells = <1>;
>> +                     #size-cells = <0>;
>> +                     compatible = "st,stm32-timers";
>> +                     reg = <0x40001000 0x400>;
>> +                     clocks = <&rcc 0 132>;
>> +                     clock-names = "clk_int";
>> +                     status = "disabled";
>> +
>> +                     timer {
>> +                             compatible = "st,stm32-timer-trigger";
>> +                             reg = <5>;
>> +                             status = "disabled";
>> +                     };
>> +             };
>> +
>> +             timers7: timers at 40001400 {
>> +                     #address-cells = <1>;
>> +                     #size-cells = <0>;
>> +                     compatible = "st,stm32-timers";
>> +                     reg = <0x40001400 0x400>;
>> +                     clocks = <&rcc 0 133>;
>> +                     clock-names = "clk_int";
>> +                     status = "disabled";
>> +
>> +                     timer {
>> +                             compatible = "st,stm32-timer-trigger";
>> +                             reg = <6>;
>> +                             status = "disabled";
>> +                     };
>> +             };
>> +
>> +             timers12: timers at 40001800 {
>> +                     #address-cells = <1>;
>> +                     #size-cells = <0>;
>> +                     compatible = "st,stm32-timers";
>> +                     reg = <0x40001800 0x400>;
>> +                     clocks = <&rcc 0 134>;
>> +                     clock-names = "clk_int";
>> +                     status = "disabled";
>> +
>> +                     pwm {
>> +                             compatible = "st,stm32-pwm";
>> +                             status = "disabled";
>> +                     };
>> +
>> +                     timer {
>> +                             compatible = "st,stm32-timer-trigger";
>> +                             reg = <9>;
>> +                             status = "disabled";
>> +                     };
>> +             };
>> +
>> +             timers13: timers at 40001C00 {
>> +                     #address-cells = <1>;
>> +                     #size-cells = <0>;
>> +                     compatible = "st,stm32-timers";
>> +                     reg = <0x40001C00 0x400>;
>> +                     clocks = <&rcc 0 135>;
>> +                     clock-names = "clk_int";
>> +                     status = "disabled";
>> +
>> +                     pwm {
>> +                             compatible = "st,stm32-pwm";
>> +                             status = "disabled";
>> +                     };
>> +             };
>> +
>> +             timers14: timers at 40002000 {
>> +                     #address-cells = <1>;
>> +                     #size-cells = <0>;
>> +                     compatible = "st,stm32-timers";
>> +                     reg = <0x40002000 0x400>;
>> +                     clocks = <&rcc 0 136>;
>> +                     clock-names = "clk_int";
>> +                     status = "disabled";
>> +
>> +                     pwm {
>> +                             compatible = "st,stm32-pwm";
>> +                             status = "disabled";
>> +                     };
>> +             };
>> +
>> +             timers1: timers at 40010000 {
>> +                     #address-cells = <1>;
>> +                     #size-cells = <0>;
>> +                     compatible = "st,stm32-timers";
>> +                     reg = <0x40010000 0x400>;
>> +                     clocks = <&rcc 0 160>;
>> +                     clock-names = "clk_int";
>> +                     status = "disabled";
>> +
>> +                     pwm {
>> +                             compatible = "st,stm32-pwm";
>> +                             status = "disabled";
>> +                     };
>> +
>> +                     timer {
>> +                             compatible = "st,stm32-timer-trigger";
>> +                             reg = <0>;
>> +                             status = "disabled";
>> +                     };
>> +             };
>> +
>> +             timers8: timers at 40010400 {
>> +                     #address-cells = <1>;
>> +                     #size-cells = <0>;
>> +                     compatible = "st,stm32-timers";
>> +                     reg = <0x40010400 0x400>;
>> +                     clocks = <&rcc 0 161>;
>> +                     clock-names = "clk_int";
>> +                     status = "disabled";
>> +
>> +                     pwm {
>> +                             compatible = "st,stm32-pwm";
>> +                             status = "disabled";
>> +                     };
>> +
>> +                     timer {
>> +                             compatible = "st,stm32-timer-trigger";
>> +                             reg = <7>;
>> +                             status = "disabled";
>> +                     };
>> +             };
>> +
>> +             timers9: timers at 40014000 {
>> +                     #address-cells = <1>;
>> +                     #size-cells = <0>;
>> +                     compatible = "st,stm32-timers";
>> +                     reg = <0x40014000 0x400>;
>> +                     clocks = <&rcc 0 176>;
>> +                     clock-names = "clk_int";
>> +                     status = "disabled";
>> +
>> +                     pwm {
>> +                             compatible = "st,stm32-pwm";
>> +                             status = "disabled";
>> +                     };
>> +
>> +                     timer {
>> +                             compatible = "st,stm32-timer-trigger";
>> +                             reg = <8>;
>> +                             status = "disabled";
>> +                     };
>> +             };
>> +
>> +             timers10: timers at 40014400 {
>> +                     #address-cells = <1>;
>> +                     #size-cells = <0>;
>> +                     compatible = "st,stm32-timers";
>> +                     reg = <0x40014400 0x400>;
>> +                     clocks = <&rcc 0 177>;
>> +                     clock-names = "clk_int";
>> +                     status = "disabled";
>> +
>> +                     pwm {
>> +                             compatible = "st,stm32-pwm";
>> +                             status = "disabled";
>> +                     };
>> +             };
>> +
>> +             timers11: timers at 40014800 {
>> +                     #address-cells = <1>;
>> +                     #size-cells = <0>;
>> +                     compatible = "st,stm32-timers";
>> +                     reg = <0x40014800 0x400>;
>> +                     clocks = <&rcc 0 178>;
>> +                     clock-names = "clk_int";
>> +                     status = "disabled";
>> +
>> +                     pwm {
>> +                             compatible = "st,stm32-pwm";
>> +                             status = "disabled";
>> +                     };
>> +             };
>>       };
>>  };
>>
>> --
>> 1.9.1
>>



-- 
Benjamin Gaignard

Graphic Study Group

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