| Message ID | 1505399319-14782-1-git-send-email-pierre-yves.mordret@st.com |
|---|---|
| Headers | show |
| Series | Add support for the STM32F7 I2C | expand |
On Thu, Sep 14, 2017 at 04:28:36PM +0200, Pierre-Yves MORDRET wrote: > This patch uses a more generic definition of speed enum for i2c-stm32f4 > driver. > > Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com> > Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> > Reviewed-by: Ludovic BARRE <ludovic.barre@st.com> Applied to for-next, thanks!
On Thu, Sep 14, 2017 at 04:28:37PM +0200, Pierre-Yves MORDRET wrote: > This patch adds initial support for the STM32F7 I2C controller. > > Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com> > Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Thanks for the quick update. I'd think the 'rate_max' variable can now be dropped and replaced by 'rate'? If so, we can fix that later incrementally. Applied to for-next (will be in 4.14), thanks! The DTS patches need to go via arm-soc.
On 09/14/2017 05:40 PM, Wolfram Sang wrote: > On Thu, Sep 14, 2017 at 04:28:37PM +0200, Pierre-Yves MORDRET wrote: >> This patch adds initial support for the STM32F7 I2C controller. >> >> Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com> >> Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> > > Thanks for the quick update. I'd think the 'rate_max' variable can now > be dropped and replaced by 'rate'? If so, we can fix that later > incrementally. Many thanks. I will try to put a reminder in my mind for this ;) > > Applied to for-next (will be in 4.14), thanks! The DTS patches need to > go via arm-soc. > Thanks again ! -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi On 09/14/2017 04:28 PM, Pierre-Yves MORDRET wrote: > This patch adds I2C1 support for STM32F746 SoC. > > Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com> > Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> > --- > Version history: > v4: > v3: > * None > v2: > * Update I2C SoC device tree with latest Linux version > --- > --- > arch/arm/boot/dts/stm32f746.dtsi | 22 ++++++++++++++++++++++ > 1 file changed, 22 insertions(+) > > diff --git a/arch/arm/boot/dts/stm32f746.dtsi b/arch/arm/boot/dts/stm32f746.dtsi > index 4506eb9..ddd8f2c 100644 > --- a/arch/arm/boot/dts/stm32f746.dtsi > +++ b/arch/arm/boot/dts/stm32f746.dtsi Applied on stm32-dt-for-v4.15 branch. Thanks Alex > @@ -361,6 +361,16 @@ > bias-disable; > }; > }; > + > + i2c1_pins_b: i2c1@0 { > + pins { > + pinmux = <STM32F746_PB9_FUNC_I2C1_SDA>, > + <STM32F746_PB8_FUNC_I2C1_SCL>; > + bias-disable; > + drive-open-drain; > + slew-rate = <0>; > + }; > + }; > }; > > crc: crc@40023000 { > @@ -380,6 +390,18 @@ > assigned-clocks = <&rcc 1 CLK_HSE_RTC>; > assigned-clock-rates = <1000000>; > }; > + > + i2c1: i2c@40005400 { > + compatible = "st,stm32f7-i2c"; > + reg = <0x40005400 0x400>; > + interrupts = <31>, > + <32>; > + resets = <&rcc STM32F7_APB1_RESET(I2C1)>; > + clocks = <&rcc 1 CLK_I2C1>; > + #address-cells = <1>; > + #size-cells = <0>; > + status = "disabled"; > + }; > }; > }; > > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi On 09/14/2017 04:28 PM, Pierre-Yves MORDRET wrote: > This patch adds I2C1 support for STM32F746 eval board > > Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com> > Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> > --- > Version history: > v4: > v3: > * None > > v2: > * Add SCL Rising/Falling time for eval board > --- > --- > arch/arm/boot/dts/stm32746g-eval.dts | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/arch/arm/boot/dts/stm32746g-eval.dts b/arch/arm/boot/dts/stm32746g-eval.dts > index 69a9579..9288c7a 100644 > --- a/arch/arm/boot/dts/stm32746g-eval.dts > +++ b/arch/arm/boot/dts/stm32746g-eval.dts Applied on stm32-dt-for-v4.15 branch. Thanks Alex > @@ -102,3 +102,11 @@ > pinctrl-names = "default"; > status = "okay"; > }; > + > +&i2c1 { > + pinctrl-0 = <&i2c1_pins_b>; > + pinctrl-names = "default"; > + i2c-scl-rising-time-ns = <185>; > + i2c-scl-falling-time-ns = <20>; > + status = "okay"; > +}; > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
This patchset adds support for the I2C controller embedded in STM32F7xx SoC. It enables I2C transfer in interrupt mode with Standard-mode, Fast-mode and Fast-mode+ bus speed. --- Version history: v4: * Fix max I2C Bus clock to 100% * Solve typo issue * Add retries value v3: * Move stm32f7_i2c_match above stm32f7_i2c_driver * of_device_get_match_data instead of of_match_device * Improve I2C Speed DT gathering * dev_err into dev_dbg for Arbitration loss * Remove useless space aligned v2: * Implement an I2C timings computation algorithm instead of static values(bindings). Algorithm uses generic I2C SCL Falling/Rising bindings and System clock to compute its timings. * I2C Device Tree Update --- Pierre-Yves MORDRET (5): dt-bindings: i2c-stm32: Document the STM32F7 I2C bindings i2c: i2c-stm32f4: use generic definition of speed enum i2c: i2c-stm32f7: add driver ARM: dts: stm32: Add I2C1 support for STM32F746 SoC ARM: dts: stm32: Add I2C1 support for STM32F746 eval board .../devicetree/bindings/i2c/i2c-stm32.txt | 29 +- arch/arm/boot/dts/stm32746g-eval.dts | 8 + arch/arm/boot/dts/stm32f746.dtsi | 22 + drivers/i2c/busses/Kconfig | 10 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-stm32.h | 20 + drivers/i2c/busses/i2c-stm32f4.c | 18 +- drivers/i2c/busses/i2c-stm32f7.c | 972 +++++++++++++++++++++ 8 files changed, 1066 insertions(+), 14 deletions(-) create mode 100644 drivers/i2c/busses/i2c-stm32.h create mode 100644 drivers/i2c/busses/i2c-stm32f7.c