Hi Sylwester,
On Friday 21 of June 2013 14:50:17 Sylwester Nawrocki wrote:
> Add separate nodes for the CAMCLK pin and turn off pull-up on camera
> ports A, B. The video bus pins and the clock output (CAMCLK) pin need
> separate nodes since full camera port is not used in some
> configurations, e.g. for MIPI CSI-2 bus only CAMCLK is required and
> data/clock signal use separate dedicated pins.
>
> Signed-off-by: Sylwester Nawrocki <[email protected]>
> Signed-off-by: Kyungmin Park <[email protected]>
> ---
> arch/arm/boot/dts/exynos4x12-pinctrl.dtsi | 40
> ++++++++++++++++++++++++----- 1 file changed, 33 insertions(+), 7
> deletions(-)
>
> diff --git a/arch/arm/boot/dts/exynos4x12-pinctrl.dtsi
> b/arch/arm/boot/dts/exynos4x12-pinctrl.dtsi index 704290f..50eaa95
> 100644
> --- a/arch/arm/boot/dts/exynos4x12-pinctrl.dtsi
> +++ b/arch/arm/boot/dts/exynos4x12-pinctrl.dtsi
> @@ -401,13 +401,26 @@
> samsung,pin-drv = <0>;
> };
>
> - cam_port_a: cam-port-a {
> + cam_port_a_io: cam-port-a-io {
> samsung,pins = "gpj0-0", "gpj0-1", "gpj0-2",
"gpj0-3",
> "gpj0-4", "gpj0-5", "gpj0-6",
"gpj0-7",
> - "gpj1-0", "gpj1-1", "gpj1-2",
"gpj1-3",
> - "gpj1-4";
> + "gpj1-0", "gpj1-1", "gpj1-2",
"gpj1-4";
> samsung,pin-function = <2>;
> - samsung,pin-pud = <3>;
> + samsung,pin-pud = <0>;
> + samsung,pin-drv = <0>;
> + };
> +
> + cam_port_a_clk_active: cam-port-a-clk-active {
> + samsung,pins = "gpj1-3";
> + samsung,pin-function = <2>;
> + samsung,pin-pud = <0>;
> + samsung,pin-drv = <3>;
> + };
> +
> + cam_port_a_clk_idle: cam-port-a-clk-idle {
> + samsung,pins = "gpj1-3";
> + samsung,pin-function = <0>;
> + samsung,pin-pud = <0>;
> samsung,pin-drv = <0>;
Who is driving the clock line in this configuration? Idle would suggest
that neither the camera nor the camif, so I think some pull should be
enabled to avoid floating pin. (Or is there an external pulling resistor
for this line in most common setups?)
> };
> };
> @@ -778,16 +791,29 @@
> samsung,pin-drv = <3>;
> };
>
> - cam_port_b: cam-port-b {
> + cam_port_b_io: cam-port-b-io {
> samsung,pins = "gpm0-0", "gpm0-1", "gpm0-2",
"gpm0-3",
> "gpm0-4", "gpm0-5", "gpm0-6",
"gpm0-7",
> - "gpm1-0", "gpm1-1", "gpm2-0",
"gpm2-1",
> - "gpm2-2";
> + "gpm1-0", "gpm1-1", "gpm2-0",
"gpm2-1";
> samsung,pin-function = <3>;
> samsung,pin-pud = <3>;
> samsung,pin-drv = <0>;
> };
>
> + cam_port_b_clk_active: cam-port-b-clk-active {
> + samsung,pins = "gpm2-2";
> + samsung,pin-function = <3>;
> + samsung,pin-pud = <0>;
> + samsung,pin-drv = <3>;
> + };
> +
> + cam_port_b_clk_idle: cam-port-b-clk-idle {
> + samsung,pins = "gpm2-2";
> + samsung,pin-function = <0>;
> + samsung,pin-pud = <0>;
> + samsung,pin-drv = <0>;
> + };
Same here.
Otherwise looks fine to me.
Best regards,
Tomasz
> +
> eint0: ext-int0 {
> samsung,pins = "gpx0-0";
> samsung,pin-function = <0xf>;
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