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| author | Stephen Warren <swarren@wwwdotorg.org> | 2012-12-31 23:26:45 -0700 |
|---|---|---|
| committer | Stephen Warren <swarren@wwwdotorg.org> | 2013-01-14 21:47:09 -0700 |
| commit | 232fed4825e832c89b1d47a24c7836918063fb3e (patch) | |
| tree | 2574ab574e31faaf19e2dc9aa6c4de4ebc0bc356 /arch/arm | |
| parent | 5186bf287aa4393b78c36f548d9b06001046b65e (diff) | |
| download | talos-obmc-linux-232fed4825e832c89b1d47a24c7836918063fb3e.tar.gz talos-obmc-linux-232fed4825e832c89b1d47a24c7836918063fb3e.zip | |
ARM: bcm2835: add I2C controllers to DT
The BCM2835 has 3 identical I2C controllers. Instantiate them all in the
SoC .dtsi file, and enable the relevant two in the Raspberry Pi board
.dts file.
Note that on the Raspberry Pi Model B revision 1, I2C0 is connected to
the general-purpose expansion header, and I2C1 is connected to the camera
connector. Revision 2 of the board swaps these assignments:-(
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/boot/dts/bcm2835-rpi-b.dts | 10 | ||||
| -rw-r--r-- | arch/arm/boot/dts/bcm2835.dtsi | 22 |
2 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/bcm2835-rpi-b.dts b/arch/arm/boot/dts/bcm2835-rpi-b.dts index 0544ef860623..aafda174a605 100644 --- a/arch/arm/boot/dts/bcm2835-rpi-b.dts +++ b/arch/arm/boot/dts/bcm2835-rpi-b.dts @@ -25,6 +25,16 @@ }; }; +&i2c0 { + status = "okay"; + clock-frequency = <100000>; +}; + +&i2c1 { + status = "okay"; + clock-frequency = <100000>; +}; + &sdhci { status = "okay"; bus-width = <4>; diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi index 1d7e4f5c0b1e..c69a591631b8 100644 --- a/arch/arm/boot/dts/bcm2835.dtsi +++ b/arch/arm/boot/dts/bcm2835.dtsi @@ -64,6 +64,22 @@ #interrupt-cells = <2>; }; + i2c0: i2c@20205000 { + compatible = "brcm,bcm2835-i2c"; + reg = <0x7e205000 0x1000>; + interrupts = <2 21>; + clocks = <&clk_i2c>; + status = "disabled"; + }; + + i2c1: i2c@20804000 { + compatible = "brcm,bcm2835-i2c"; + reg = <0x7e804000 0x1000>; + interrupts = <2 21>; + clocks = <&clk_i2c>; + status = "disabled"; + }; + sdhci: sdhci { compatible = "brcm,bcm2835-sdhci"; reg = <0x7e300000 0x100>; @@ -73,6 +89,12 @@ }; }; + clk_i2c: clock { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <150000000>; + }; + clk_mmc: clock { compatible = "fixed-clock"; #clock-cells = <0>; |
