ARM: dt: tegra: ventana: define pinmux for ddc

Tegra 2's I2C2 controller can be routed to either the PTA
or DDC pin group on Ventana. So:
- Remove the HDMI function definition of pta pingroup
- Define child i2c adapters(ddc & pta) for I2C2 controller

Signed-off-by: Mark Zhang <markz@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

1 files changed, 63 insertions, 6 deletions

diff --git a/arch/arm/boot/dts/tegra20-ventana.dts b/arch/arm/boot/dts/tegra20-ventana.dts
index bec8bb297ad8..1dde0d360564 100644
--- a/arch/arm/boot/dts/tegra20-ventana.dts
+++ b/arch/arm/boot/dts/tegra20-ventana.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";
@@ -98,7 +93,7 @@
                                 nvidia,function = "pcie";
                         };
                         hdint {
-                                nvidia,pins = "hdint", "pta";
+                                nvidia,pins = "hdint";
                                 nvidia,function = "hdmi";
                         };
                         i2cp {
@@ -129,6 +124,10 @@
                                         "lspi", "lvp1", "lvs";
                                 nvidia,function = "displaya";
                         };
+                        owc {
+                                nvidia,pins = "owc", "spdi", "spdo", "uac";
+                                nvidia,function = "rsvd2";
+                        };
                         pmc {
                                 nvidia,pins = "pmc";
                                 nvidia,function = "pwr_on";
@@ -248,6 +247,39 @@
                                 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 {
@@ -291,6 +323,31 @@
                 clock-frequency = <400000>;
         };
 
+        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>;