On 05/01/2014 01:10 AM, Alexandre Courbot wrote:
> Tegra Note 7 is a consumer tablet embedding a Tegra 4 SoC with 1GB RAM
> and a 720p panel.
>
> The following features are enabled by this device tree: UART, eMMC, USB
> (needs external power), PMIC, backlight, DSI panel, keys.
>
> SD card, HDMI, charger, self-powered USB, audio, wifi, bluetooth are not
> yet supported but might be by future patches (likely in that order).
> diff --git a/arch/arm/boot/dts/tegra114-tn7.dts
> b/arch/arm/boot/dts/tegra114-tn7.dts
> + chosen {
> + /* TN7's bootloader's arguments need to be overridden */
> + bootargs = "console=ttyS0,115200n8 console=tty1 gpt cma=128M
> fbcon=rotate:2";
Do we still need the cma argument at all now? The default is now 64M in
tegra_defconfig, and 128M seems quite large.
> + host1x@50000000 {
> + hdmi@54280000 {
> + status = "okay";
> +
> + hdmi-supply = <&vdd_5v0_hdmi>;
> + vdd-supply = <&vdd_3v3_hdmi>;
> + pll-supply = <&vdd_1v05_pll>;
> +
> + nvidia,ddc-i2c-bus = <&hdmi_ddc>;
> + nvidia,hpd-gpio =
> + <&gpio TEGRA_GPIO(N, 7) GPIO_ACTIVE_HIGH>;
> + };
If HDMI doesn't work yet (per commit description), should we leave it
out of the DT for now?
> + serial@70006300 {
> + status = "okay";
> + };
Is there actually an accessible UART on the board? I guess this is for
people lucky enough to have internal boards with the debug connector. If
so, this is probably fine.
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