The CG8 field of the CCM CCGR3 register is named as 'mipi_core_cfg' clock,
according to the i.MX6q/sdl reference manuals. This clock is actually the
gate for several clocks, including the hsi_tx_sel clock's output and the
video_27m clock's output. The MIPI DSI host controller embedded in the
i.MX6q/sdl SoCs uses the video_27m clock to generate PLL reference clock and
MIPI core configuration clock. In order to gate/ungate the two MIPI DSI
host controller relevant clocks, this patch adds the mipi_core_cfg clock as
a shared clock gate.
Suggested-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
Signed-off-by: Liu Ying <Ying.Liu@xxxxxxxxxxxxx>
---
v8->v9:
* Rebase onto the imx-drm/next branch of Philipp Zabel's open git repository.
v7->v8:
* None.
v6->v7:
* None.
v5->v6:
* Add two spaces in the clock driver to eliminate two errors reported by
the checkpatch.pl script.
v4->v5:
* None.
v3->v4:
* None.
v2->v3:
* Newly introduced in v3.
arch/arm/mach-imx/clk-imx6q.c | 1 +
include/dt-bindings/clock/imx6qdl-clock.h | 3 ++-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c
index 049e922..cbdbe2a 100644
--- a/arch/arm/mach-imx/clk-imx6q.c
+++ b/arch/arm/mach-imx/clk-imx6q.c
@@ -418,6 +418,7 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node)
clk[IMX6QDL_CLK_LDB_DI1] = imx_clk_gate2("ldb_di1", "ldb_di1_podf", base + 0x74, 14);
clk[IMX6QDL_CLK_IPU2_DI1] = imx_clk_gate2("ipu2_di1", "ipu2_di1_sel", base + 0x74, 10);
clk[IMX6QDL_CLK_HSI_TX] = imx_clk_gate2_shared("hsi_tx", "hsi_tx_podf", base + 0x74, 16, &share_count_mipi_core_cfg);
+ clk[IMX6QDL_CLK_MIPI_CORE_CFG] = imx_clk_gate2_shared("mipi_core_cfg", "video_27m", base + 0x74, 16, &share_count_mipi_core_cfg);
if (cpu_is_imx6dl())
/*
* The multiplexer and divider of the imx6q clock gpu2d get
diff --git a/include/dt-bindings/clock/imx6qdl-clock.h b/include/dt-bindings/clock/imx6qdl-clock.h
index 25625bf..dbc828c 100644
--- a/include/dt-bindings/clock/imx6qdl-clock.h
+++ b/include/dt-bindings/clock/imx6qdl-clock.h
@@ -249,6 +249,7 @@
#define IMX6QDL_PLL7_BYPASS 236
#define IMX6QDL_CLK_GPT_3M 237
#define IMX6QDL_CLK_VIDEO_27M 238
-#define IMX6QDL_CLK_END 239
+#define IMX6QDL_CLK_MIPI_CORE_CFG 239
+#define IMX6QDL_CLK_END 240
#endif /* __DT_BINDINGS_CLOCK_IMX6QDL_H */
--
2.1.0
--
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