| Message ID | 1481638820-29324-2-git-send-email-gabriel.fernandez@st.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 12/13, gabriel.fernandez@st.com wrote: > From: Gabriel Fernandez <gabriel.fernandez@st.com> > > Creation of dt include file for specific stm32f4 clocks. > These specific clocks are not derived from system clock (SYSCLOCK) > We should use index 1 to use these clocks in DT. > e.g. <&rcc 1 CLK_LSI> > > Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> > Acked-by: Rob Herring <robh@kernel.org> > --- Applied to clk-stm32f4 and merged into clk-next.
Hi Stephen, On 12/22/2016 01:10 AM, Stephen Boyd wrote: > On 12/13, gabriel.fernandez@st.com wrote: >> From: Gabriel Fernandez <gabriel.fernandez@st.com> >> >> Creation of dt include file for specific stm32f4 clocks. >> These specific clocks are not derived from system clock (SYSCLOCK) >> We should use index 1 to use these clocks in DT. >> e.g. <&rcc 1 CLK_LSI> >> >> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> >> Acked-by: Rob Herring <robh@kernel.org> >> --- > > Applied to clk-stm32f4 and merged into clk-next. > I'm preparing pull request branch for STM32 DT part. This patch is also requested to build correctly DT patches. Do you know how could we synchronize our pull request ? Thanks Alex
On 01/09, Alexandre Torgue wrote: > Hi Stephen, > > On 12/22/2016 01:10 AM, Stephen Boyd wrote: > >On 12/13, gabriel.fernandez@st.com wrote: > >>From: Gabriel Fernandez <gabriel.fernandez@st.com> > >> > >>Creation of dt include file for specific stm32f4 clocks. > >>These specific clocks are not derived from system clock (SYSCLOCK) > >>We should use index 1 to use these clocks in DT. > >>e.g. <&rcc 1 CLK_LSI> > >> > >>Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> > >>Acked-by: Rob Herring <robh@kernel.org> > >>--- > > > >Applied to clk-stm32f4 and merged into clk-next. > > > > I'm preparing pull request branch for STM32 DT part. This patch is > also requested to build correctly DT patches. Do you know how could > we synchronize our pull request ? > clk-stm32f4 is stable and not going to be rebased, so you're good to base patches on it and send it off to arm-soc if the arm-soc maintainers agree to it. You can also base off an earlier part of the branch if you only need this first patch for example.
On 01/09/2017 08:33 PM, Stephen Boyd wrote: > On 01/09, Alexandre Torgue wrote: >> Hi Stephen, >> >> On 12/22/2016 01:10 AM, Stephen Boyd wrote: >>> On 12/13, gabriel.fernandez@st.com wrote: >>>> From: Gabriel Fernandez <gabriel.fernandez@st.com> >>>> >>>> Creation of dt include file for specific stm32f4 clocks. >>>> These specific clocks are not derived from system clock (SYSCLOCK) >>>> We should use index 1 to use these clocks in DT. >>>> e.g. <&rcc 1 CLK_LSI> >>>> >>>> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> >>>> Acked-by: Rob Herring <robh@kernel.org> >>>> --- >>> >>> Applied to clk-stm32f4 and merged into clk-next. >>> >> >> I'm preparing pull request branch for STM32 DT part. This patch is >> also requested to build correctly DT patches. Do you know how could >> we synchronize our pull request ? >> > > clk-stm32f4 is stable and not going to be rebased, so you're good > to base patches on it and send it off to arm-soc if the arm-soc > maintainers agree to it. You can also base off an earlier part of > the branch if you only need this first patch for example. > I will base my DT branch from 4.10-rc1 + this commit (seen with Arnd) Thanks
diff --git a/Documentation/devicetree/bindings/clock/st,stm32-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32-rcc.txt index 0532d81..8f19d87 100644 --- a/Documentation/devicetree/bindings/clock/st,stm32-rcc.txt +++ b/Documentation/devicetree/bindings/clock/st,stm32-rcc.txt @@ -17,6 +17,9 @@ Required properties: property, containing a phandle to the clock device node, an index selecting between gated clocks and other clocks and an index specifying the clock to use. +- clocks: External oscillator clock phandle + - high speed external clock signal (HSE) + - external I2S clock (I2S_CKIN) Example: @@ -25,6 +28,7 @@ Example: #clock-cells = <2> compatible = "st,stm32f42xx-rcc", "st,stm32-rcc"; reg = <0x40023800 0x400>; + clocks = <&clk_hse>, <&clk_i2s_ckin>; }; Specifying gated clocks @@ -66,6 +70,19 @@ The secondary index is bound with the following magic numbers: 0 SYSTICK 1 FCLK + 2 CLK_LSI (low-power clock source) + 3 CLK_LSE (generated from a 32.768 kHz low-speed external + crystal or ceramic resonator) + 4 CLK_HSE_RTC (HSE division factor for RTC clock) + 5 CLK_RTC (real-time clock) + 6 PLL_VCO_I2S (vco frequency of I2S pll) + 7 PLL_VCO_SAI (vco frequency of SAI pll) + 8 CLK_LCD (LCD-TFT) + 9 CLK_I2S (I2S clocks) + 10 CLK_SAI1 (audio clocks) + 11 CLK_SAI2 + 12 CLK_I2SQ_PDIV (post divisor of pll i2s q divisor) + 13 CLK_SAIQ_PDIV (post divisor of pll sai q divisor) Example: diff --git a/include/dt-bindings/clock/stm32fx-clock.h b/include/dt-bindings/clock/stm32fx-clock.h new file mode 100644 index 0000000..08bcab6 --- /dev/null +++ b/include/dt-bindings/clock/stm32fx-clock.h @@ -0,0 +1,39 @@ +/* + * stm32fx-clock.h + * + * Copyright (C) 2016 STMicroelectronics + * Author: Gabriel Fernandez for STMicroelectronics. + * License terms: GNU General Public License (GPL), version 2 + */ + +/* + * List of clocks wich are not derived from system clock (SYSCLOCK) + * + * The index of these clocks is the secondary index of DT bindings + * (see Documentatoin/devicetree/bindings/clock/st,stm32-rcc.txt) + * + * e.g: + <assigned-clocks = <&rcc 1 CLK_LSE>; +*/ + +#ifndef _DT_BINDINGS_CLK_STMFX_H +#define _DT_BINDINGS_CLK_STMFX_H + +#define SYSTICK 0 +#define FCLK 1 +#define CLK_LSI 2 +#define CLK_LSE 3 +#define CLK_HSE_RTC 4 +#define CLK_RTC 5 +#define PLL_VCO_I2S 6 +#define PLL_VCO_SAI 7 +#define CLK_LCD 8 +#define CLK_I2S 9 +#define CLK_SAI1 10 +#define CLK_SAI2 11 +#define CLK_I2SQ_PDIV 12 +#define CLK_SAIQ_PDIV 13 + +#define END_PRIMARY_CLK 14 + +#endif