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-rw-r--r--src/mainboard/google/oak/mainboard.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/src/mainboard/google/oak/mainboard.c b/src/mainboard/google/oak/mainboard.c
index 8dde2ef186..614c965ae6 100644
--- a/src/mainboard/google/oak/mainboard.c
+++ b/src/mainboard/google/oak/mainboard.c
@@ -67,9 +67,37 @@ static void configure_audio(void)
mt_pll_set_aud_div(48 * KHz);
}
+/* Setup backlight control pins as output pin and power-off by default */
+static void configure_backlight(void)
+{
+ switch (board_id()) {
+ case 0:
+ gpio_output(PAD_DISP_PWM0, 0); /* DISP_PWM0 */
+ mt6391_gpio_output(MT6391_KP_ROW3, 0); /* PANEL_POWER_EN_6397 */
+ break;
+ case 1:
+ case 2:
+ gpio_output(PAD_DISP_PWM0, 0); /* DISP_PWM0 */
+ gpio_output(PAD_PCM_TX, 0); /* PANEL_POWER_EN */
+ break;
+ case 3:
+ gpio_output(PAD_UCTS2, 0); /* PANEL_LCD_POWER_EN */
+ gpio_output(PAD_DISP_PWM0, 0); /* DISP_PWM0 */
+ gpio_output(PAD_PCM_TX, 0); /* PANEL_POWER_EN */
+ break;
+ case 4:
+ default:
+ gpio_output(PAD_SRCLKENAI, 0); /* PANEL_LCD_POWER_EN */
+ gpio_output(PAD_DISP_PWM0, 0); /* DISP_PWM0 */
+ gpio_output(PAD_PCM_TX, 0); /* PANEL_POWER_EN */
+ break;
+ }
+}
+
static void mainboard_init(device_t dev)
{
configure_audio();
+ configure_backlight();
}
static void mainboard_enable(device_t dev)