| Message ID | 1359027324-14534-1-git-send-email-manishv.b@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 1/24/2013 5:05 PM, Vishwanathrao Badarkhe, Manish wrote: > Add I2C0 device tree node information to da850-evm. > Also, add I2C0 pin muxing information in da850-evm. > > Signed-off-by: Vishwanathrao Badarkhe, Manish <manishv.b@ti.com> > --- > Depends on patch > http://comments.gmane.org/gmane.linux.davinci/25993 > > arch/arm/boot/dts/da850-evm.dts | 15 +++++++++++++++ > arch/arm/boot/dts/da850.dtsi | 10 ++++++++++ > 2 files changed, 25 insertions(+), 0 deletions(-) > > diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts > index 8cac9d2..3d8290a 100755 > --- a/arch/arm/boot/dts/da850-evm.dts > +++ b/arch/arm/boot/dts/da850-evm.dts > @@ -27,5 +27,20 @@ > serial2: serial@1d0d000 { > status = "okay"; > }; > + i2c0@1c22000 { This should be i2c0: i2c@1c22000 to follow the convention elsewhere in file. > + status = "okay"; > + }; > + }; > +}; > +&pmx_core { > + pinctrl-names = "default"; > + pinctrl-0 = < > + &i2c0_pins > + >; > + > + i2c0_pins: pinmux_i2c0_pins{ > + pinctrl-single,bits = < > + 0x10 0x00002200 0x0000ff00 /* I2C0_SDA,I2C0_SCL */ > + >; This should go into the dtsi file. See the discussion on NAND DT support submitted by Anil Kumar. Thanks, Sekhar PS: You are using an old address for Kevin Hilman. The MAINTAINERS file has been updated for a long time now. Liam's address is also wrong but I don't have his updated e-mail.
On Fri, Jan 25, 2013 at 16:20:13, Nori, Sekhar wrote: > On 1/24/2013 5:05 PM, Vishwanathrao Badarkhe, Manish wrote: > > Add I2C0 device tree node information to da850-evm. > > Also, add I2C0 pin muxing information in da850-evm. > > > > Signed-off-by: Vishwanathrao Badarkhe, Manish <manishv.b@ti.com> > > --- > > Depends on patch > > http://comments.gmane.org/gmane.linux.davinci/25993 > > > > arch/arm/boot/dts/da850-evm.dts | 15 +++++++++++++++ > > arch/arm/boot/dts/da850.dtsi | 10 ++++++++++ > > 2 files changed, 25 insertions(+), 0 deletions(-) > > > > diff --git a/arch/arm/boot/dts/da850-evm.dts > > b/arch/arm/boot/dts/da850-evm.dts index 8cac9d2..3d8290a 100755 > > --- a/arch/arm/boot/dts/da850-evm.dts > > +++ b/arch/arm/boot/dts/da850-evm.dts > > @@ -27,5 +27,20 @@ > > serial2: serial@1d0d000 { > > status = "okay"; > > }; > > + i2c0@1c22000 { > > This should be > i2c0: i2c@1c22000 > > to follow the convention elsewhere in file. Ok, I will change this in next version. > > > + status = "okay"; > > + }; > > + }; > > +}; > > +&pmx_core { > > + pinctrl-names = "default"; > > + pinctrl-0 = < > > + &i2c0_pins > > + >; > > + > > + i2c0_pins: pinmux_i2c0_pins{ > > + pinctrl-single,bits = < > > + 0x10 0x00002200 0x0000ff00 /* I2C0_SDA,I2C0_SCL */ > > + >; > > This should go into the dtsi file. See the discussion on NAND DT support submitted by Anil Kumar. I have seen Anil Kumar's discussion for pin-muxing which includes Linus patch of grab pin control handles from device core at following location: http://lkml.indiana.edu/hypermail/linux/kernel/1301.2/00094.html I have done changes accordingly for I2C0 pin muxing and seen kernel crashes giving message like "i2c_davinci i2c_davinci.1: could not find pctldev for node /soc/ pinmux@1c14120/pinmux_i2c0_pins, deferring probe". This is happened because I2C0 driver gets probed before pin mux driver. To resolve this issue, I made changes in code to ensure pin control driver gets probed before I2C0 driver by registering pin control driver during arch_init call. Hence, in order to move I2C0 pin muxing in dtsi file above fix is required. > > Thanks, > Sekhar > > PS: You are using an old address for Kevin Hilman. The MAINTAINERS file has been updated for a long time now. Liam's address is also wrong but I don't have his updated e-mail. > Regards, Manish
diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts index 8cac9d2..3d8290a 100755 --- a/arch/arm/boot/dts/da850-evm.dts +++ b/arch/arm/boot/dts/da850-evm.dts @@ -27,5 +27,20 @@ serial2: serial@1d0d000 { status = "okay"; }; + i2c0@1c22000 { + status = "okay"; + }; + }; +}; +&pmx_core { + pinctrl-names = "default"; + pinctrl-0 = < + &i2c0_pins + >; + + i2c0_pins: pinmux_i2c0_pins{ + pinctrl-single,bits = < + 0x10 0x00002200 0x0000ff00 /* I2C0_SDA,I2C0_SCL */ + >; }; }; diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi index 1e6d090..f5ee811 100755 --- a/arch/arm/boot/dts/da850.dtsi +++ b/arch/arm/boot/dts/da850.dtsi @@ -66,5 +66,15 @@ interrupt-parent = <&intc>; status = "disabled"; }; + i2c0@1c22000 { + compatible = "ti,davinci-i2c"; + reg = <0x22000 0x1000>; + clock-frequency = <100000>; + interrupts = <15>; + interrupt-parent = <&intc>; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; + }; }; };
Add I2C0 device tree node information to da850-evm. Also, add I2C0 pin muxing information in da850-evm. Signed-off-by: Vishwanathrao Badarkhe, Manish <manishv.b@ti.com> --- Depends on patch http://comments.gmane.org/gmane.linux.davinci/25993 arch/arm/boot/dts/da850-evm.dts | 15 +++++++++++++++ arch/arm/boot/dts/da850.dtsi | 10 ++++++++++ 2 files changed, 25 insertions(+), 0 deletions(-)