diff options
| author | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2025-02-19 17:23:32 +0100 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2025-02-26 12:15:49 +0200 |
| commit | de36ea80b303da228844cd9379232aa4e3825f58 (patch) | |
| tree | 529c17c54096774220a8efe005236a6f885af241 | |
| parent | 52b3f0e118b1700e5c60ff676a1f522ce44fadc8 (diff) | |
drm/msm/dsi/phy: Use dsi_pll_cmn_clk_cfg1_update() when registering PLL
Newly added dsi_pll_cmn_clk_cfg1_update() wrapper protects concurrent
updates to PHY_CMN_CLK_CFG1 register between driver and Common Clock
Framework. pll_7nm_register() still used in one place previous
readl+writel, which can be simplified with this new wrapper.
This is purely for readability and simplification and should have no
functional impact, because the code touched here is before clock is
registered via CCF, so there is no concurrency issue.
Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/638323/
Link: https://lore.kernel.org/r/20250219-drm-msm-phy-pll-cfg-reg-v5-1-d28973fa513a@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
| -rw-r--r-- | drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/registers/display/dsi_phy_7nm.xml | 1 |
2 files changed, 4 insertions, 5 deletions
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c index 3332399c7fd7..098301880c26 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c @@ -737,11 +737,9 @@ static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm, struct clk_hw **provide * don't register a pclk_mux clock and just use post_out_div instead */ if (pll_7nm->phy->cphy_mode) { - u32 data; - - data = readl(pll_7nm->phy->base + REG_DSI_7nm_PHY_CMN_CLK_CFG1); - writel(data | 3, pll_7nm->phy->base + REG_DSI_7nm_PHY_CMN_CLK_CFG1); - + dsi_pll_cmn_clk_cfg1_update(pll_7nm, + DSI_7nm_PHY_CMN_CLK_CFG1_DSICLK_SEL__MASK, + DSI_7nm_PHY_CMN_CLK_CFG1_DSICLK_SEL(3)); phy_pll_out_dsi_parent = pll_post_out_div; } else { snprintf(clk_name, sizeof(clk_name), "dsi%d_pclk_mux", pll_7nm->phy->id); diff --git a/drivers/gpu/drm/msm/registers/display/dsi_phy_7nm.xml b/drivers/gpu/drm/msm/registers/display/dsi_phy_7nm.xml index 35f7f40e405b..d2c8c46bb041 100644 --- a/drivers/gpu/drm/msm/registers/display/dsi_phy_7nm.xml +++ b/drivers/gpu/drm/msm/registers/display/dsi_phy_7nm.xml @@ -17,6 +17,7 @@ xsi:schemaLocation="https://gitlab.freedesktop.org/freedreno/ rules-fd.xsd"> <bitfield name="CLK_EN" pos="5" type="boolean"/> <bitfield name="CLK_EN_SEL" pos="4" type="boolean"/> <bitfield name="BITCLK_SEL" low="2" high="3" type="uint"/> + <bitfield name="DSICLK_SEL" low="0" high="1" type="uint"/> </reg32> <reg32 offset="0x00018" name="GLBL_CTRL"/> <reg32 offset="0x0001c" name="RBUF_CTRL"/> |