diff options
author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2020-10-15 22:03:30 +0300 |
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committer | Rob Clark <robdclark@chromium.org> | 2020-11-04 19:26:25 +0300 |
commit | a4ccc37693a271330a46208afbeaed939d54fdbb (patch) | |
tree | a4447a05979362c7f5892a08d2471d5e84d2e630 /drivers/gpu/drm/msm/dsi | |
parent | 5047ab95bb7db0e7b2ecfd5e9bcafc7fd822c652 (diff) | |
download | linux-a4ccc37693a271330a46208afbeaed939d54fdbb.tar.xz |
drm/msm/dsi_pll_10nm: restore VCO rate during restore_state
PHY disable/enable resets PLL registers to default values. Thus in
addition to restoring several registers we also need to restore VCO rate
settings.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Fixes: c6659785dfb3 ("drm/msm/dsi/pll: call vco set rate explicitly")
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/msm/dsi')
-rw-r--r-- | drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c index 6ac04fc303f5..e4e9bf04b736 100644 --- a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c +++ b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c @@ -559,6 +559,7 @@ static int dsi_pll_10nm_restore_state(struct msm_dsi_pll *pll) struct pll_10nm_cached_state *cached = &pll_10nm->cached_state; void __iomem *phy_base = pll_10nm->phy_cmn_mmio; u32 val; + int ret; val = pll_read(pll_10nm->mmio + REG_DSI_10nm_PHY_PLL_PLL_OUTDIV_RATE); val &= ~0x3; @@ -573,6 +574,13 @@ static int dsi_pll_10nm_restore_state(struct msm_dsi_pll *pll) val |= cached->pll_mux; pll_write(phy_base + REG_DSI_10nm_PHY_CMN_CLK_CFG1, val); + ret = dsi_pll_10nm_vco_set_rate(&pll->clk_hw, pll_10nm->vco_current_rate, pll_10nm->vco_ref_clk_rate); + if (ret) { + DRM_DEV_ERROR(&pll_10nm->pdev->dev, + "restore vco rate failed. ret=%d\n", ret); + return ret; + } + DBG("DSI PLL%d", pll_10nm->id); return 0; |