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authorNeil Armstrong <narmstrong@baylibre.com>2019-06-05 15:53:20 +0300
committerNeil Armstrong <narmstrong@baylibre.com>2019-06-07 11:03:57 +0300
commite98c7952db1a832c671ef70d00bfe0365069e5ff (patch)
tree370bc01da682a3ac46fefb13e43b64e5f426927c /drivers/gpu
parent283f1e383e91d96fe652fad549537ae15cf31d60 (diff)
downloadlinux-e98c7952db1a832c671ef70d00bfe0365069e5ff.tar.xz
drm/meson: fix G12A HDMI PLL settings for 4K60 1000/1001 variations
The Amlogic G12A HDMI PLL needs some specific settings to lock with different fractional values for the 5,4GHz mode. Handle the 1000/1001 variation fractional case here to avoid having the PLL in an non lockable state. Fixes: 202b9808f8ed ("drm/meson: Add G12A Video Clock setup") Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Kevin Hilman <khilman@baylibre.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190605125320.8708-1-narmstrong@baylibre.com
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/meson/meson_vclk.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/gpu/drm/meson/meson_vclk.c b/drivers/gpu/drm/meson/meson_vclk.c
index 58b4af5fbb6d..26732f038d19 100644
--- a/drivers/gpu/drm/meson/meson_vclk.c
+++ b/drivers/gpu/drm/meson/meson_vclk.c
@@ -503,8 +503,17 @@ void meson_hdmi_pll_set_params(struct meson_drm *priv, unsigned int m,
/* G12A HDMI PLL Needs specific parameters for 5.4GHz */
if (m >= 0xf7) {
- regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0xea68dc00);
- regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x65771290);
+ if (frac < 0x10000) {
+ regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4,
+ 0x6a685c00);
+ regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5,
+ 0x11551293);
+ } else {
+ regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4,
+ 0xea68dc00);
+ regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5,
+ 0x65771290);
+ }
regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x39272000);
regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL7, 0x55540000);
} else {