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@xxxxxxxxxxx>
---
Changes for v3:
- Newly added
Changes for v4:
- None
.../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;
}
--
1.9.1
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