diff options
| author | Lin Huang <hl@rock-chips.com> | 2016-11-21 17:35:20 +0800 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-11-29 18:13:50 +0100 |
| commit | 079b5c65c3347d2539a6b3d7d88a194f2d66ad40 (patch) | |
| tree | a674e5df15dcb791169e55a3cd7ff053223ab1fa /src/soc/rockchip/rk3399 | |
| parent | 9f470b1930d1eaec9cd72243a457edb03df151e4 (diff) | |
rockchip/rk3399: display: Retry edp initialization if it fails
We found that sometimes the edp doesn't get the edid or that video
config fails on kevin after a reboot. Now we will retry 3 times to
initialize it if there are errors.
BRANCH=gru
BUG=chrome-os-partner:60150
TEST=reboot kevin, the edp initialization error is no longer seen.
Change-Id: I96e20e526294fbc856fbdffcbd63accdc7371ef6
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 28c57a6e5b89c7b3a96204ec19a080067460544a
Original-Change-Id: I1382cdf4119fc4eeae5c2b36485030e3a38c2d91
Original-Signed-off-by: Lin Huang <hl@rock-chips.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/412622
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/17626
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/soc/rockchip/rk3399')
| -rw-r--r-- | src/soc/rockchip/rk3399/display.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/src/soc/rockchip/rk3399/display.c b/src/soc/rockchip/rk3399/display.c index 671e518fc3..4261b26399 100644 --- a/src/soc/rockchip/rk3399/display.c +++ b/src/soc/rockchip/rk3399/display.c @@ -41,6 +41,7 @@ void rk_display_init(device_t dev) struct edid edid; struct soc_rockchip_rk3399_config *conf = dev->chip_info; enum vop_modes detected_mode = VOP_MODE_UNKNOWN; + int retry_count = 0; /* let's use vop0 in rk3399 */ uint32_t vop_id = 0; @@ -63,15 +64,14 @@ void rk_display_init(device_t dev) */ write32(&rk3399_grf->soc_con25, RK_SETBITS(1 << 11)); +retry_edp: rk_edp_init(); - if (rk_edp_get_edid(&edid) == 0) { detected_mode = VOP_MODE_EDP; break; } - printk(BIOS_WARNING, "Cannot get EDID from EDP.\n"); - if (conf->vop_mode == VOP_MODE_EDP) - return; + goto edp_error; + /* fall thru */ case VOP_MODE_HDMI: printk(BIOS_WARNING, "HDMI display is NOT supported yet.\n"); @@ -100,13 +100,24 @@ void rk_display_init(device_t dev) case VOP_MODE_EDP: default: /* will enable edp in depthcharge */ - if (rk_edp_prepare()) { - printk(BIOS_WARNING, "edp prepare error\n"); - return; - } + if (rk_edp_prepare()) + goto edp_error; mainboard_power_on_backlight(); break; } set_vbe_mode_info_valid(&edid, (uintptr_t)0); + return; + +edp_error: + if (retry_count++ < 3) { + /* rst edp */ + write32(&cru_ptr->softrst_con[17], + RK_SETBITS(1 << 12 | 1 << 13)); + udelay(1); + write32(&cru_ptr->softrst_con[17], + RK_CLRBITS(1 << 12 | 1 << 13)); + goto retry_edp; + } + printk(BIOS_WARNING, "epd initial error\n"); } |