[PATCH 07/26] clk: imx8mn: add video clocks support

Dario Binacchi
2024-09-13T09:58:15Z

From: Michael Trimarchi <michael@amarulasolutions.com>

Add clocks support for the video subsystem.

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

drivers/clk/imx/clk-imx8mn.c | 97 +++++++++++++++++++++++++++++++++---
1 file changed, 90 insertions(+), 7 deletions(-)

diff --git a/drivers/clk/imx/clk-imx8mn.c b/drivers/clk/imx/clk-imx8mn.c
index 449ebf2d0733..7ea4c90fa137 100644
--- a/drivers/clk/imx/clk-imx8mn.c
+++ b/drivers/clk/imx/clk-imx8mn.c
@@ -17,6 +17,7 @@
static u32 share_count_nand;

static const char * const pll_ref_sels[] = { "clock-osc-24m", "dummy", "dummy", "dummy", };
+static const char * const video_pll_bypass_sels[] = {"video_pll", "video_pll_ref_sel", };
static const char * const dram_pll_bypass_sels[] = {"dram_pll", "dram_pll_ref_sel", };
static const char * const arm_pll_bypass_sels[] = {"arm_pll", "arm_pll_ref_sel", };
static const char * const sys_pll1_bypass_sels[] = {"sys_pll1", "sys_pll1_ref_sel", };
@@ -47,17 +48,52 @@ static const char * const imx8mn_enet_axi_sels[] = {"clock-osc-24m", "sys_pll1_2
"video_pll_out", "sys_pll3_out", };

#ifndef CONFIG_SPL_BUILD
-static const char * const imx8mn_enet_ref_sels[] = {"clock-osc-24m", "sys_pll2_125m", "sys_pll2_50m",
- "sys_pll2_100m", "sys_pll1_160m", "audio_pll1_out",
+static const char * const imx8mn_disp_axi_sels[] = {"clock-osc-24m", "sys_pll2_1000m",
+ "sys_pll1_800m", "sys_pll3_out", "sys_pll1_40m",
+ "audio_pll2_out", "clk_ext1", "clk_ext4", };
+
+static const char * const imx8mn_disp_apb_sels[] = {"clock-osc-24m", "sys_pll2_125m",
+ "sys_pll1_800m", "sys_pll3_out", "sys_pll1_40m",
+ "audio_pll2_out", "clk_ext1", "clk_ext3", };
+
+static const char * const imx8mn_disp_pixel_sels[] = {"clock-osc-24m", "video_pll_out",
+ "audio_pll2_out", "audio_pll1_out",
+ "sys_pll1_800m", "sys_pll2_1000m",
+ "sys_pll3_out", "clk_ext4", };
+
+static const char * const imx8mn_dsi_core_sels[] = {"clock-osc-24m", "sys_pll1_266m",
+ "sys_pll2_250m", "sys_pll1_800m",
+ "sys_pll2_1000m", "sys_pll3_out",
+ "audio_pll2_out", "video_pll_out", };
+
+static const char * const imx8mn_dsi_phy_sels[] = {"clock-osc-24m", "sys_pll2_125m",
+ "sys_pll2_100m", "sys_pll1_800m",
+ "sys_pll2_1000m", "clk_ext2",
+ "audio_pll2_out", "video_pll_out", };
+
+static const char * const imx8mn_dsi_dbi_sels[] = {"clock-osc-24m", "sys_pll1_266m",
+ "sys_pll2_100m", "sys_pll1_800m",
+ "sys_pll2_1000m", "sys_pll3_out",
+ "audio_pll2_out", "video_pll_out", };
+
+static const char * const imx8mn_camera_pixel_sels[] = {"clock-osc-24m", "sys_pll1_266m",
+ "sys_pll2_250m", "sys_pll1_800m",
+ "sys_pll2_1000m", "sys_pll3_out",
+ "audio_pll2_out", "video_pll_out", };
+
+static const char * const imx8mn_enet_ref_sels[] = {"clock-osc-24m", "sys_pll2_125m",
+ "sys_pll2_50m", "sys_pll2_100m",
+ "sys_pll1_160m", "audio_pll1_out",
"video_pll_out", "clk_ext4", };

-static const char * const imx8mn_enet_timer_sels[] = {"clock-osc-24m", "sys_pll2_100m", "audio_pll1_out",
- "clk_ext1", "clk_ext2", "clk_ext3",
- "clk_ext4", "video_pll_out", };
+static const char * const imx8mn_enet_timer_sels[] = {"clock-osc-24m", "sys_pll2_100m",
+ "audio_pll1_out", "clk_ext1", "clk_ext2",
+ "clk_ext3", "clk_ext4", "video_pll_out", };

static const char * const imx8mn_enet_phy_sels[] = {"clock-osc-24m", "sys_pll2_50m", "sys_pll2_125m",
- "sys_pll2_200m", "sys_pll2_500m", "audio_pll1_out",
- "video_pll_out", "audio_pll2_out", };
+ "sys_pll2_200m", "sys_pll2_500m",
+ "audio_pll1_out", "video_pll_out",
+ "audio_pll2_out", };
#endif

static const char * const imx8mn_nand_usdhc_sels[] = {"clock-osc-24m", "sys_pll1_266m", "sys_pll1_800m",
@@ -151,6 +187,10 @@ static const char * const imx8mn_usb_phy_sels[] = {"clock-osc-24m", "sys_pll1_10
"sys_pll2_100m", "sys_pll2_200m", "clk_ext2",
"clk_ext3", "audio_pll2_out", };

+#ifndef CONFIG_SPL_BUILD
+static unsigned int share_count_disp;
+#endif
+
static int imx8mn_clk_probe(struct udevice *dev)
{
struct clk osc_24m_clk;
@@ -191,8 +231,19 @@ static int imx8mn_clk_probe(struct udevice *dev)
clk_dm(IMX8MN_SYS_PLL3,
imx_clk_pll14xx("sys_pll3", "sys_pll3_ref_sel",
base + 0x114, &imx_1416x_pll));
+ clk_dm(IMX8MN_VIDEO_PLL_REF_SEL,
+ imx_clk_mux("video_pll_ref_sel", base + 0x28, 0, 2,
+ pll_ref_sels, ARRAY_SIZE(pll_ref_sels)));
+ clk_dm(IMX8MN_VIDEO_PLL1,
+ imx_clk_pll14xx("video_pll", "video_pll_ref_sel",
+ base + 0x28, &imx_1443x_pll));

/* PLL bypass out */
+ clk_dm(IMX8MN_VIDEO_PLL_BYPASS,
+ imx_clk_mux_flags("video_pll_bypass", base + 0x28, 16, 1,
+ video_pll_bypass_sels,
+ ARRAY_SIZE(video_pll_bypass_sels),
+ CLK_SET_RATE_PARENT));
clk_dm(IMX8MN_DRAM_PLL_BYPASS,
imx_clk_mux_flags("dram_pll_bypass", base + 0x50, 4, 1,
dram_pll_bypass_sels,
@@ -220,6 +271,9 @@ static int imx8mn_clk_probe(struct udevice *dev)
CLK_SET_RATE_PARENT));

/* PLL out gate */
+ clk_dm(IMX8MN_VIDEO_PLL_OUT,
+ imx_clk_gate("video_pll_out", "video_pll_bypass",
+ base + 0x28, 13));
clk_dm(IMX8MN_DRAM_PLL_OUT,
imx_clk_gate("dram_pll_out", "dram_pll_bypass",
base + 0x50, 13));
@@ -376,6 +430,35 @@ static int imx8mn_clk_probe(struct udevice *dev)

/* clks not needed in SPL stage */
#ifndef CONFIG_SPL_BUILD
+ clk_dm(IMX8MN_CLK_DISP_AXI,
+ imx8m_clk_composite("disp_axi", imx8mn_disp_axi_sels, base + 0x8a00));
+ clk_dm(IMX8MN_CLK_DISP_APB,
+ imx8m_clk_composite("disp_apb", imx8mn_disp_apb_sels, base + 0x8a80));
+ clk_dm(IMX8MN_CLK_DISP_PIXEL,
+ __imx8m_clk_composite("disp_pixel", imx8mn_disp_pixel_sels, base + 0xa500,
+ CLK_SET_RATE_PARENT));
+ clk_dm(IMX8MN_CLK_DSI_CORE,
+ imx8m_clk_composite("dsi_core", imx8mn_dsi_core_sels, base + 0xbb00));
+ clk_dm(IMX8MN_CLK_DSI_PHY_REF,
+ imx8m_clk_composite("dsi_phy_ref", imx8mn_dsi_phy_sels, base + 0xbb80));
+ clk_dm(IMX8MN_CLK_DSI_DBI,
+ imx8m_clk_composite("dsi_dbi", imx8mn_dsi_dbi_sels, base + 0xbc00));
+ clk_dm(IMX8MN_CLK_CAMERA_PIXEL,
+ imx8m_clk_composite("camera_pixel", imx8mn_camera_pixel_sels, base + 0xbd00));
+
+ clk_dm(IMX8MN_CLK_DISP_AXI_ROOT,
+ imx_clk_gate2_shared2("disp_axi_root_clk", "disp_axi", base + 0x45d0, 0,
+ &share_count_disp));
+ clk_dm(IMX8MN_CLK_DISP_APB_ROOT,
+ imx_clk_gate2_shared2("disp_apb_root_clk", "disp_apb", base + 0x45d0, 0,
+ &share_count_disp));
+ clk_dm(IMX8MN_CLK_CAMERA_PIXEL_ROOT,
+ imx_clk_gate2_shared2("camera_pixel_clk", "camera_pixel", base + 0x45d0, 0,
+ &share_count_disp));
+ clk_dm(IMX8MN_CLK_DISP_PIXEL_ROOT,
+ imx_clk_gate2_shared2("disp_pixel_clk", "disp_pixel", base + 0x45d0, 0,
+ &share_count_disp));
+
clk_dm(IMX8MN_CLK_ENET_REF,
imx8m_clk_composite("enet_ref", imx8mn_enet_ref_sels,
base + 0xa980));
--
2.43.0