erebion/coreboot
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

veyron_brain: Add basic HDMI support

Browse source 
This adds a configure_hdmi() function that drives the HDMI
enable output high and configures the iomux. Calls to PMIC
functions to enable HDMI power are moved here as well.

(write32() --> writel() for cherry-pick)

BUG=none
BRANCH=none
TEST=with follow-up patches, we now get a dev screen on Brain.

Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/282046
Change-Id: I0c6e9f8fc5e06f53a1a160d8ab2e32447168139e
Reviewed-on: https://chromium-review.googlesource.com/284097
This commit is contained in:
David Hendricks 2015-06-25 16:59:02 -07:00 • committed by ChromeOS Commit Bot
commit 5ca1f9a5bb
2 changed files with 12 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

1
src/mainboard/google/veyron_brain/devicetree.cb
View file

@ -21,5 +21,6 @@
chip soc/rockchip/rk3288
device cpu_cluster 0 on end
register "vop_id" = "1"
register "vop_mode" = "VOP_MODE_HDMI"
register "framebuffer_bits_per_pixel" = "16"
end

11
src/mainboard/google/veyron_brain/mainboard.c
View file

@ -76,10 +76,20 @@ static void configure_vop(void)
/* lcdc(vop) iodomain select 1.8V */
writel(RK_SETBITS(1 << 0), &rk3288_grf->io_vsel);
}
static void configure_hdmi(void)
{
rk808_configure_switch(2, 1); /* VCC18_LCD (HDMI_AVDD_1V8) */
rk808_configure_ldo(7, 1000); /* VDD10_LCD (HDMI_AVDD_1V0) */
rk808_configure_switch(1, 1); /* VCC33_LCD */
/* set POWER_HDMI_ON */
gpio_output(GPIO(7, A, 2), 1);
/* HDMI I2C */
writel(IOMUX_HDMI_EDP_I2C_SDA, &rk3288_grf->iomux_i2c5sda);
writel(IOMUX_HDMI_EDP_I2C_SCL, &rk3288_grf->iomux_i2c5scl);
}
static void mainboard_init(device_t dev)
@ -90,6 +100,7 @@ static void mainboard_init(device_t dev)
configure_emmc();
configure_codec();
configure_vop();
configure_hdmi();
elog_init();
elog_add_watchdog_reset();