From 236f32230c243b5f6f5e80730a8133fbded2beed Mon Sep 17 00:00:00 2001 From: "Oliver F. Brown" Date: Fri, 7 Jun 2024 21:33:44 +0800 Subject: [PATCH] clk: imx: imx8qxp: Add clock muxes for MIPI and PHY ref clocks The MIPI Pixel and PHY Reference can use the bypass clock as a source. The MIPI bypass clock is the Pixel clock from the Display controller via the pixel link. Using the pixel clock for the PHY reference allows the MIPI bit clock match the pixel rate exactly. The MIPI pixel clock is currently set to be source from the bypass clock in the SCFW. This patch allows the pixel clock parent to be set by the kernel in the event that the SCFW default clock parent may change in the future. Signed-off-by: Oliver F. Brown Signed-off-by: Robert Chiras Signed-off-by: Peng Fan Reviewed-by: Abel Vesa Link: https://lore.kernel.org/r/20240607133347.3291040-13-peng.fan@oss.nxp.com Signed-off-by: Abel Vesa --- drivers/clk/imx/clk-imx8qxp.c | 24 ++++++++++++++++++++---- 1 file changed, 20 insertions(+), 4 deletions(-) diff --git a/drivers/clk/imx/clk-imx8qxp.c b/drivers/clk/imx/clk-imx8qxp.c index a0654edaae83..fe6509be6ce9 100644 --- a/drivers/clk/imx/clk-imx8qxp.c +++ b/drivers/clk/imx/clk-imx8qxp.c @@ -90,6 +90,22 @@ static const char * const mipi_sels[] = { "clk_dummy", }; +static const char * const mipi0_phy_sels[] = { + "clk_dummy", + "clk_dummy", + "mipi_pll_div2_clk", + "clk_dummy", + "mipi0_bypass_clk", +}; + +static const char * const mipi1_phy_sels[] = { + "clk_dummy", + "clk_dummy", + "mipi_pll_div2_clk", + "clk_dummy", + "mipi1_bypass_clk", +}; + static const char * const lcd_sels[] = { "clk_dummy", "clk_dummy", @@ -222,25 +238,25 @@ static int imx8qxp_clk_probe(struct platform_device *pdev) /* MIPI-LVDS SS */ imx_clk_scu("mipi0_bypass_clk", IMX_SC_R_MIPI_0, IMX_SC_PM_CLK_BYPASS); - imx_clk_scu("mipi0_pixel_clk", IMX_SC_R_MIPI_0, IMX_SC_PM_CLK_PER); + imx_clk_scu2("mipi0_pixel_clk", mipi0_phy_sels, ARRAY_SIZE(mipi0_phy_sels), IMX_SC_R_MIPI_0, IMX_SC_PM_CLK_PER); imx_clk_scu("lvds0_bypass_clk", IMX_SC_R_LVDS_0, IMX_SC_PM_CLK_BYPASS); imx_clk_scu2("lvds0_pixel_clk", lvds0_sels, ARRAY_SIZE(lvds0_sels), IMX_SC_R_LVDS_0, IMX_SC_PM_CLK_MISC2); imx_clk_scu2("lvds0_phy_clk", lvds0_sels, ARRAY_SIZE(lvds0_sels), IMX_SC_R_LVDS_0, IMX_SC_PM_CLK_MISC3); imx_clk_scu2("mipi0_dsi_tx_esc_clk", mipi_sels, ARRAY_SIZE(mipi_sels), IMX_SC_R_MIPI_0, IMX_SC_PM_CLK_MST_BUS); imx_clk_scu2("mipi0_dsi_rx_esc_clk", mipi_sels, ARRAY_SIZE(mipi_sels), IMX_SC_R_MIPI_0, IMX_SC_PM_CLK_SLV_BUS); - imx_clk_scu2("mipi0_dsi_phy_clk", mipi_sels, ARRAY_SIZE(mipi_sels), IMX_SC_R_MIPI_0, IMX_SC_PM_CLK_PHY); + imx_clk_scu2("mipi0_dsi_phy_clk", mipi0_phy_sels, ARRAY_SIZE(mipi0_phy_sels), IMX_SC_R_MIPI_0, IMX_SC_PM_CLK_PHY); imx_clk_scu("mipi0_i2c0_clk", IMX_SC_R_MIPI_0_I2C_0, IMX_SC_PM_CLK_MISC2); imx_clk_scu("mipi0_i2c1_clk", IMX_SC_R_MIPI_0_I2C_1, IMX_SC_PM_CLK_MISC2); imx_clk_scu("mipi0_pwm0_clk", IMX_SC_R_MIPI_0_PWM_0, IMX_SC_PM_CLK_PER); imx_clk_scu("mipi1_bypass_clk", IMX_SC_R_MIPI_1, IMX_SC_PM_CLK_BYPASS); - imx_clk_scu("mipi1_pixel_clk", IMX_SC_R_MIPI_1, IMX_SC_PM_CLK_PER); + imx_clk_scu2("mipi1_pixel_clk", mipi1_phy_sels, ARRAY_SIZE(mipi1_phy_sels), IMX_SC_R_MIPI_1, IMX_SC_PM_CLK_PER); imx_clk_scu("lvds1_bypass_clk", IMX_SC_R_LVDS_1, IMX_SC_PM_CLK_BYPASS); imx_clk_scu2("lvds1_pixel_clk", lvds1_sels, ARRAY_SIZE(lvds1_sels), IMX_SC_R_LVDS_1, IMX_SC_PM_CLK_MISC2); imx_clk_scu2("lvds1_phy_clk", lvds1_sels, ARRAY_SIZE(lvds1_sels), IMX_SC_R_LVDS_1, IMX_SC_PM_CLK_MISC3); imx_clk_scu2("mipi1_dsi_tx_esc_clk", mipi_sels, ARRAY_SIZE(mipi_sels), IMX_SC_R_MIPI_1, IMX_SC_PM_CLK_MST_BUS); imx_clk_scu2("mipi1_dsi_rx_esc_clk", mipi_sels, ARRAY_SIZE(mipi_sels), IMX_SC_R_MIPI_1, IMX_SC_PM_CLK_SLV_BUS); - imx_clk_scu2("mipi1_dsi_phy_clk", mipi_sels, ARRAY_SIZE(mipi_sels), IMX_SC_R_MIPI_1, IMX_SC_PM_CLK_PHY); + imx_clk_scu2("mipi1_dsi_phy_clk", mipi1_phy_sels, ARRAY_SIZE(mipi1_phy_sels), IMX_SC_R_MIPI_1, IMX_SC_PM_CLK_PHY); imx_clk_scu("mipi1_i2c0_clk", IMX_SC_R_MIPI_1_I2C_0, IMX_SC_PM_CLK_MISC2); imx_clk_scu("mipi1_i2c1_clk", IMX_SC_R_MIPI_1_I2C_1, IMX_SC_PM_CLK_MISC2); imx_clk_scu("mipi1_pwm0_clk", IMX_SC_R_MIPI_1_PWM_0, IMX_SC_PM_CLK_PER);