| Message ID | 1515805547-22816-5-git-send-email-kramasub@codeaurora.org (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Delegated to: | Andy Gross |
| Headers | show |
On Fri 12 Jan 17:05 PST 2018, Karthikeyan Ramasubramanian wrote: > Add device tree binding support for I2C Controller in GENI based > QUP Wrapper. > > Signed-off-by: Sagar Dharia <sdharia@codeaurora.org> > Signed-off-by: Karthikeyan Ramasubramanian <kramasub@codeaurora.org> > --- > .../devicetree/bindings/i2c/i2c-qcom-geni.txt | 35 ++++++++++++++++++++++ > .../devicetree/bindings/soc/qcom/qcom,geni-se.txt | 19 ++++++++++++ > 2 files changed, 54 insertions(+) > create mode 100644 Documentation/devicetree/bindings/i2c/i2c-qcom-geni.txt > > diff --git a/Documentation/devicetree/bindings/i2c/i2c-qcom-geni.txt b/Documentation/devicetree/bindings/i2c/i2c-qcom-geni.txt > new file mode 100644 > index 0000000..ea84be7 > --- /dev/null > +++ b/Documentation/devicetree/bindings/i2c/i2c-qcom-geni.txt > @@ -0,0 +1,35 @@ > +Qualcomm Technologies Inc. GENI Serial Engine based I2C Controller > + > +Required properties: > + - compatible: Should be: > + * "qcom,i2c-geni. As this is a subset of geni it would look better with qcom,geni-i2c imho. > + - reg: Should contain QUP register address and length. > + - interrupts: Should contain I2C interrupt. > + - clock-names: Should contain "se-clk". Omit "clk" from the clock names. > + - clocks: Serial engine core clock needed by the device. > + - pinctrl-names/pinctrl-0/1: The GPIOs assigned to this core. The names > + should be "active" and "sleep" for the pin confuguration when core is active > + or when entering sleep state. No need to describe pinctrl properties - and your description here doesn't match the code. > + - #address-cells: Should be <1> Address cells for i2c device address > + - #size-cells: Should be <0> as i2c addresses have no size component > + > +Optional property: > + - clock-frequency : Desired I2C bus clock frequency in Hz. > + When missing default to 400000Hz. > + > +Child nodes should conform to i2c bus binding. ..."as described in i2c.txt" Regards, Bjorn -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 1/16/2018 11:31 PM, Bjorn Andersson wrote: > On Fri 12 Jan 17:05 PST 2018, Karthikeyan Ramasubramanian wrote: > >> Add device tree binding support for I2C Controller in GENI based >> QUP Wrapper. >> >> Signed-off-by: Sagar Dharia <sdharia@codeaurora.org> >> Signed-off-by: Karthikeyan Ramasubramanian <kramasub@codeaurora.org> >> --- >> .../devicetree/bindings/i2c/i2c-qcom-geni.txt | 35 ++++++++++++++++++++++ >> .../devicetree/bindings/soc/qcom/qcom,geni-se.txt | 19 ++++++++++++ >> 2 files changed, 54 insertions(+) >> create mode 100644 Documentation/devicetree/bindings/i2c/i2c-qcom-geni.txt >> >> diff --git a/Documentation/devicetree/bindings/i2c/i2c-qcom-geni.txt b/Documentation/devicetree/bindings/i2c/i2c-qcom-geni.txt >> new file mode 100644 >> index 0000000..ea84be7 >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/i2c/i2c-qcom-geni.txt >> @@ -0,0 +1,35 @@ >> +Qualcomm Technologies Inc. GENI Serial Engine based I2C Controller >> + >> +Required properties: >> + - compatible: Should be: >> + * "qcom,i2c-geni. > > As this is a subset of geni it would look better with qcom,geni-i2c > imho. Ok. > >> + - reg: Should contain QUP register address and length. >> + - interrupts: Should contain I2C interrupt. >> + - clock-names: Should contain "se-clk". > > Omit "clk" from the clock names. Ok. > >> + - clocks: Serial engine core clock needed by the device. >> + - pinctrl-names/pinctrl-0/1: The GPIOs assigned to this core. The names >> + should be "active" and "sleep" for the pin confuguration when core is active >> + or when entering sleep state. > > No need to describe pinctrl properties - and your description here > doesn't match the code. Removed as it is called by the device core before probe. > >> + - #address-cells: Should be <1> Address cells for i2c device address >> + - #size-cells: Should be <0> as i2c addresses have no size component >> + >> +Optional property: >> + - clock-frequency : Desired I2C bus clock frequency in Hz. >> + When missing default to 400000Hz. >> + >> +Child nodes should conform to i2c bus binding. > > ..."as described in i2c.txt" Ok. > > Regards, > Bjorn > Regards, Karthik.
diff --git a/Documentation/devicetree/bindings/i2c/i2c-qcom-geni.txt b/Documentation/devicetree/bindings/i2c/i2c-qcom-geni.txt new file mode 100644 index 0000000..ea84be7 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-qcom-geni.txt @@ -0,0 +1,35 @@ +Qualcomm Technologies Inc. GENI Serial Engine based I2C Controller + +Required properties: + - compatible: Should be: + * "qcom,i2c-geni. + - reg: Should contain QUP register address and length. + - interrupts: Should contain I2C interrupt. + - clock-names: Should contain "se-clk". + - clocks: Serial engine core clock needed by the device. + - pinctrl-names/pinctrl-0/1: The GPIOs assigned to this core. The names + should be "active" and "sleep" for the pin confuguration when core is active + or when entering sleep state. + - #address-cells: Should be <1> Address cells for i2c device address + - #size-cells: Should be <0> as i2c addresses have no size component + +Optional property: + - clock-frequency : Desired I2C bus clock frequency in Hz. + When missing default to 400000Hz. + +Child nodes should conform to i2c bus binding. + +Example: + +i2c0: i2c@a94000 { + compatible = "qcom,i2c-geni"; + reg = <0xa94000 0x4000>; + interrupts = <GIC_SPI 358 0>; + clock-names = "se-clk"; + clocks = <&clock_gcc GCC_QUPV3_WRAP0_S5_CLK>; + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&qup_1_i2c_5_active>; + pinctrl-1 = <&qup_1_i2c_5_sleep>; + #address-cells = <1>; + #size-cells = <0>; +}; diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.txt index 66f8a16..2ffbb3e 100644 --- a/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.txt +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.txt @@ -24,6 +24,9 @@ A GENI based QUP wrapper controller node can contain 0 or more child nodes representing serial devices. These serial devices can be a QCOM UART, I2C controller, spi controller, or some combination of aforementioned devices. +See the following documentation for child node definitions: +Documentation/devicetree/bindings/i2c/i2c-qcom-geni.txt + Example: qup0: qcom,geniqup0@8c0000 { compatible = "qcom,geni-se-qup"; @@ -31,4 +34,20 @@ Example: clock-names = "m-ahb", "s-ahb"; clocks = <&clock_gcc GCC_QUPV3_WRAP_0_M_AHB_CLK>, <&clock_gcc GCC_QUPV3_WRAP_0_S_AHB_CLK>; + #address-cells = <1>; + #size-cells = <1>; + ranges; + + i2c0: i2c@a94000 { + compatible = "qcom,i2c-geni"; + reg = <0xa94000 0x4000>; + interrupts = <GIC_SPI 358 0>; + clock-names = "se-clk"; + clocks = <&clock_gcc GCC_QUPV3_WRAP0_S5_CLK>; + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&qup_1_i2c_5_active>; + pinctrl-1 = <&qup_1_i2c_5_sleep>; + #address-cells = <1>; + #size-cells = <0>; + }; }