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

tegra124: Active dc/sor register change immediately

Browse source 
When doing DP attach, we need to make sure the register change to
take effect immediately, otherwise it may fail to catch the attach
timing.

BRANCH=None
BUG=chrome-os-partner:28128
TEST=Display works and system boots up on Nyan and Big

Change-Id: I569dc435a1aa4aac0d5ecd0655d2ad87a791246d
Signed-off-by: Vince Hsu <vinceh@nvidia.com>
Reviewed-on: https://chromium-review.googlesource.com/200414
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Jimmy Zhang <jimmzhang@nvidia.com>
Reviewed-by: David Hendricks <dhendrix@chromium.org>
This commit is contained in:
Vince Hsu 2014-05-16 18:07:53 +08:00 • committed by chrome-internal-fetch
commit 47b86e2893
1 changed files with 3 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

4
src/soc/nvidia/tegra124/sor.c
View file

@ -763,9 +763,11 @@ void tegra_dc_sor_attach(struct tegra_dc_sor_data *sor)
tegra_dc_sor_super_update(sor);
/* Enable dc */
reg_val = READL(&disp_ctrl->cmd.state_access);
WRITEL(reg_val | WRITE_MUX_ACTIVE, &disp_ctrl->cmd.state_access);
WRITEL(DISP_CTRL_MODE_C_DISPLAY, &disp_ctrl->cmd.disp_cmd);
WRITEL(SOR_ENABLE, &disp_ctrl->disp.disp_win_opt);
WRITEL(GENERAL_ACT_REQ, &disp_ctrl->cmd.state_ctrl);
WRITEL(reg_val, &disp_ctrl->cmd.state_access);
if (tegra_dc_sor_poll_register(sor, NV_SOR_TEST,
NV_SOR_TEST_ACT_HEAD_OPMODE_DEFAULT_MASK,