clk: imx: imx8qxp: Register dc0_bypass0_clk before disp clk

[ Upstream commit e61352d5ecdc0da2e7253121c15d9a3e040f78a1 ]

The initialization order of SCU clocks affects the sequence of SCU clock
resume. If there are no other effects, the earlier the initialization,
the earlier the resume. During SCU clock resume, the clock rate is
restored. As SCFW guidelines, configure the parent clock rate before
configuring the child rate.

Fixes: 91e916771de0 ("clk: imx: scu: remove legacy scu clock binding support")
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/20240607133347.3291040-14-peng.fan@oss.nxp.com
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/clk/imx/clk-imx8qxp.c b/drivers/clk/imx/clk-imx8qxp.c
index 7d8883916cacdd54080043579bf284bc9cd61932..16710eef641bad3391384d81cd58b176d48e503b 100644 (file)
--- a/drivers/clk/imx/clk-imx8qxp.c
+++ b/drivers/clk/imx/clk-imx8qxp.c
@@ -206,11 +206,11 @@ static int imx8qxp_clk_probe(struct platform_device *pdev)
        imx_clk_scu("usb3_lpm_div", IMX_SC_R_USB_2, IMX_SC_PM_CLK_MISC);
 
        /* Display controller SS */
-       imx_clk_scu2("dc0_disp0_clk", dc0_sels, ARRAY_SIZE(dc0_sels), IMX_SC_R_DC_0, IMX_SC_PM_CLK_MISC0);
-       imx_clk_scu2("dc0_disp1_clk", dc0_sels, ARRAY_SIZE(dc0_sels), IMX_SC_R_DC_0, IMX_SC_PM_CLK_MISC1);
        imx_clk_scu("dc0_pll0_clk", IMX_SC_R_DC_0_PLL_0, IMX_SC_PM_CLK_PLL);
        imx_clk_scu("dc0_pll1_clk", IMX_SC_R_DC_0_PLL_1, IMX_SC_PM_CLK_PLL);
        imx_clk_scu("dc0_bypass0_clk", IMX_SC_R_DC_0_VIDEO0, IMX_SC_PM_CLK_BYPASS);
+       imx_clk_scu2("dc0_disp0_clk", dc0_sels, ARRAY_SIZE(dc0_sels), IMX_SC_R_DC_0, IMX_SC_PM_CLK_MISC0);
+       imx_clk_scu2("dc0_disp1_clk", dc0_sels, ARRAY_SIZE(dc0_sels), IMX_SC_R_DC_0, IMX_SC_PM_CLK_MISC1);
        imx_clk_scu("dc0_bypass1_clk", IMX_SC_R_DC_0_VIDEO1, IMX_SC_PM_CLK_BYPASS);
 
        imx_clk_scu2("dc1_disp0_clk", dc1_sels, ARRAY_SIZE(dc1_sels), IMX_SC_R_DC_1, IMX_SC_PM_CLK_MISC0);