This patch renames pll_clk to sclk_clk. The clock referenced by pll_clk is actually not the pll input clock for dsi. The pll input clock comes from the board's oscillator directly.
Signed-off-by: Hyungwon Hwang human.hwang@samsung.com --- Changes for v3: - Newly added .../devicetree/bindings/video/exynos_dsim.txt | 6 ++--- drivers/gpu/drm/exynos/exynos_drm_dsi.c | 31 ++++++++-------------- 2 files changed, 14 insertions(+), 23 deletions(-)
diff --git a/Documentation/devicetree/bindings/video/exynos_dsim.txt b/Documentation/devicetree/bindings/video/exynos_dsim.txt index 802aa7e..39940ca 100644 --- a/Documentation/devicetree/bindings/video/exynos_dsim.txt +++ b/Documentation/devicetree/bindings/video/exynos_dsim.txt @@ -10,13 +10,13 @@ Required properties: - interrupts: should contain DSI interrupt - clocks: list of clock specifiers, must contain an entry for each required entry in clock-names - - clock-names: should include "bus_clk"and "pll_clk" entries + - clock-names: should include "bus_clk"and "sclk_mipi" entries - phys: list of phy specifiers, must contain an entry for each required entry in phy-names - phy-names: should include "dsim" entry - vddcore-supply: MIPI DSIM Core voltage supply (e.g. 1.1V) - vddio-supply: MIPI DSIM I/O and PLL voltage supply (e.g. 1.8V) - - samsung,pll-clock-frequency: specifies frequency of the "pll_clk" clock + - samsung,pll-clock-frequency: specifies frequency of the oscillator clock - #address-cells, #size-cells: should be set respectively to <1> and <0> according to DSI host bindings (see MIPI DSI bindings [1])
@@ -48,7 +48,7 @@ Example: reg = <0x11C80000 0x10000>; interrupts = <0 79 0>; clocks = <&clock 286>, <&clock 143>; - clock-names = "bus_clk", "pll_clk"; + clock-names = "bus_clk", "sclk_mipi"; phys = <&mipi_phy 1>; phy-names = "dsim"; vddcore-supply = <&vusb_reg>; diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index 05fe93d..4af18b2f 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -277,7 +277,7 @@ struct exynos_dsi {
void __iomem *reg_base; struct phy *phy; - struct clk *pll_clk; + struct clk *sclk_clk; struct clk *bus_clk; struct regulator_bulk_data supplies[2]; int irq; @@ -431,16 +431,7 @@ static unsigned long exynos_dsi_set_pll(struct exynos_dsi *dsi, u16 m; u32 reg;
- clk_set_rate(dsi->pll_clk, dsi->pll_clk_rate); - - fin = clk_get_rate(dsi->pll_clk); - if (!fin) { - dev_err(dsi->dev, "failed to get PLL clock frequency\n"); - return 0; - } - - dev_dbg(dsi->dev, "PLL input frequency: %lu\n", fin); - + fin = dsi->pll_clk_rate; fout = exynos_dsi_pll_find_pms(dsi, fin, freq, &p, &m, &s); if (!fout) { dev_err(dsi->dev, @@ -1308,10 +1299,10 @@ static int exynos_dsi_poweron(struct exynos_dsi *dsi) goto err_bus_clk; }
- ret = clk_prepare_enable(dsi->pll_clk); + ret = clk_prepare_enable(dsi->sclk_clk); if (ret < 0) { dev_err(dsi->dev, "cannot enable pll clock %d\n", ret); - goto err_pll_clk; + goto err_sclk_clk; }
ret = phy_power_on(dsi->phy); @@ -1323,8 +1314,8 @@ static int exynos_dsi_poweron(struct exynos_dsi *dsi) return 0;
err_phy: - clk_disable_unprepare(dsi->pll_clk); -err_pll_clk: + clk_disable_unprepare(dsi->sclk_clk); +err_sclk_clk: clk_disable_unprepare(dsi->bus_clk); err_bus_clk: regulator_bulk_disable(ARRAY_SIZE(dsi->supplies), dsi->supplies); @@ -1350,7 +1341,7 @@ static void exynos_dsi_poweroff(struct exynos_dsi *dsi)
phy_power_off(dsi->phy);
- clk_disable_unprepare(dsi->pll_clk); + clk_disable_unprepare(dsi->sclk_clk); clk_disable_unprepare(dsi->bus_clk);
ret = regulator_bulk_disable(ARRAY_SIZE(dsi->supplies), dsi->supplies); @@ -1720,10 +1711,10 @@ static int exynos_dsi_probe(struct platform_device *pdev) return -EPROBE_DEFER; }
- dsi->pll_clk = devm_clk_get(dev, "pll_clk"); - if (IS_ERR(dsi->pll_clk)) { - dev_info(dev, "failed to get dsi pll input clock\n"); - ret = PTR_ERR(dsi->pll_clk); + dsi->sclk_clk = devm_clk_get(dev, "sclk_mipi"); + if (IS_ERR(dsi->sclk_clk)) { + dev_info(dev, "failed to get dsi sclk clock\n"); + ret = PTR_ERR(dsi->sclk_clk); goto err_del_component; }