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| author | Stephen Warren <swarren@nvidia.com> | 2012-04-16 17:41:17 -0600 |
|---|---|---|
| committer | Stephen Warren <swarren@nvidia.com> | 2012-07-06 12:27:35 -0600 |
| commit | a18cf6dcbf6160fe4b39449f996f9f3ed37198cc (patch) | |
| tree | 8ea47ec7f8a2150ee5da6c1d5e16d42bf6e794a6 /arch/arm/boot/dts/tegra20-seaboard.dts | |
| parent | c80efbae6a53d9702630fc5f96662f96a45ca56a (diff) | |
| download | lwn-a18cf6dcbf6160fe4b39449f996f9f3ed37198cc.tar.gz lwn-a18cf6dcbf6160fe4b39449f996f9f3ed37198cc.zip | |
ARM: dt: tegra: seaboard: instantiate pinctrl-based I2C bus mux
Tegra's I2C2 controller can be routed to either the PTA or DDC pin group
on Seaboard. Define the pinctrl state nodes required to allow runtime
control of this routing. Instantiate a pinctrl-i2cmux I2C bus mux that
uses these pinctrl states.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'arch/arm/boot/dts/tegra20-seaboard.dts')
| -rw-r--r-- | arch/arm/boot/dts/tegra20-seaboard.dts | 75 |
1 files changed, 64 insertions, 11 deletions
diff --git a/arch/arm/boot/dts/tegra20-seaboard.dts b/arch/arm/boot/dts/tegra20-seaboard.dts index b797901d040d..1e1939f1495b 100644 --- a/arch/arm/boot/dts/tegra20-seaboard.dts +++ b/arch/arm/boot/dts/tegra20-seaboard.dts @@ -64,11 +64,6 @@ nvidia,pins = "dap4"; nvidia,function = "dap4"; }; - ddc { - nvidia,pins = "ddc", "owc", "spdi", "spdo", - "uac"; - nvidia,function = "rsvd2"; - }; dta { nvidia,pins = "dta", "dtb", "dtc", "dtd", "dte"; nvidia,function = "vi"; @@ -129,14 +124,14 @@ "lspi", "lvp1", "lvs"; nvidia,function = "displaya"; }; + owc { + nvidia,pins = "owc", "spdi", "spdo", "uac"; + nvidia,function = "rsvd2"; + }; pmc { nvidia,pins = "pmc"; nvidia,function = "pwr_on"; }; - pta { - nvidia,pins = "pta"; - nvidia,function = "i2c2"; - }; rm { nvidia,pins = "rm"; nvidia,function = "i2c1"; @@ -176,7 +171,7 @@ conf_ata { nvidia,pins = "ata", "atb", "atc", "atd", "cdev1", "cdev2", "dap1", "dap2", - "dap4", "dtf", "gma", "gmc", "gmd", + "dap4", "ddc", "dtf", "gma", "gmc", "gmd", "gme", "gpu", "gpu7", "i2cp", "irrx", "irtx", "pta", "rm", "sdc", "sdd", "slxd", "slxk", "spdi", "spdo", "uac", @@ -185,7 +180,7 @@ nvidia,tristate = <0>; }; conf_ate { - nvidia,pins = "ate", "csus", "dap3", "ddc", + nvidia,pins = "ate", "csus", "dap3", "gpv", "owc", "slxc", "spib", "spid", "spie"; nvidia,pull = <0>; @@ -255,6 +250,39 @@ nvidia,slew-rate-falling = <3>; }; }; + + state_i2cmux_ddc: pinmux_i2cmux_ddc { + ddc { + nvidia,pins = "ddc"; + nvidia,function = "i2c2"; + }; + pta { + nvidia,pins = "pta"; + nvidia,function = "rsvd4"; + }; + }; + + state_i2cmux_pta: pinmux_i2cmux_pta { + ddc { + nvidia,pins = "ddc"; + nvidia,function = "rsvd4"; + }; + pta { + nvidia,pins = "pta"; + nvidia,function = "i2c2"; + }; + }; + + state_i2cmux_idle: pinmux_i2cmux_idle { + ddc { + nvidia,pins = "ddc"; + nvidia,function = "rsvd4"; + }; + pta { + nvidia,pins = "pta"; + nvidia,function = "rsvd4"; + }; + }; }; i2s@70002800 { @@ -312,6 +340,31 @@ }; }; + i2cmux { + compatible = "i2c-mux-pinctrl"; + #address-cells = <1>; + #size-cells = <0>; + + i2c-parent = <&{/i2c@7000c400}>; + + pinctrl-names = "ddc", "pta", "idle"; + pinctrl-0 = <&state_i2cmux_ddc>; + pinctrl-1 = <&state_i2cmux_pta>; + pinctrl-2 = <&state_i2cmux_idle>; + + i2c@0 { + reg = <0>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c@1 { + reg = <1>; + #address-cells = <1>; + #size-cells = <0>; + }; + }; + i2c@7000c500 { status = "okay"; clock-frequency = <400000>; |