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| author | Robert Foss <robert.foss@linaro.org> | 2022-12-13 16:03:04 +0100 |
|---|---|---|
| committer | Robert Foss <robert.foss@linaro.org> | 2022-12-15 11:18:52 +0100 |
| commit | 2a9df204be0bbb896e087f00b9ee3fc559d5a608 (patch) | |
| tree | 208237876a13a9d16645c7a02de5eb9c6ca57333 /drivers/gpu/drm/bridge/lontium-lt9611.c | |
| parent | 7d7bf35d630751fb27f2041c680a5ddccae9d83c (diff) | |
| download | lwn-2a9df204be0bbb896e087f00b9ee3fc559d5a608.tar.gz lwn-2a9df204be0bbb896e087f00b9ee3fc559d5a608.zip | |
drm/bridge: lt9611: Fix PLL being unable to lock
This fixes PLL being unable to lock, and is derived from an equivalent
downstream commit.
Available LT9611 documentation does not list this register, neither does
LT9611UXC (which is a different chip).
This commit has been confirmed to fix HDMI output on DragonBoard 845c.
Suggested-by: Amit Pundir <amit.pundir@linaro.org>
Reviewed-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20221213150304.4189760-1-robert.foss@linaro.org
Diffstat (limited to 'drivers/gpu/drm/bridge/lontium-lt9611.c')
| -rw-r--r-- | drivers/gpu/drm/bridge/lontium-lt9611.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c index ffcdc8dba379..3ce4e495aee5 100644 --- a/drivers/gpu/drm/bridge/lontium-lt9611.c +++ b/drivers/gpu/drm/bridge/lontium-lt9611.c @@ -259,6 +259,7 @@ static int lt9611_pll_setup(struct lt9611 *lt9611, const struct drm_display_mode { 0x8126, 0x55 }, { 0x8127, 0x66 }, { 0x8128, 0x88 }, + { 0x812a, 0x20 }, }; regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg)); |