This is a note to let you know that I've just added the patch titled clk: imx8mp: tune the order of enet_qos_root_clk to the 6.0-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: clk-imx8mp-tune-the-order-of-enet_qos_root_clk.patch and it can be found in the queue-6.0 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 43a948b4edd5355f88c5be9dd39a7474e4205f92 Author: Peng Fan <peng.fan@xxxxxxx> Date: Mon Aug 15 09:34:28 2022 +0800 clk: imx8mp: tune the order of enet_qos_root_clk [ Upstream commit c68cd258a67730c24566b9688d7c134e67459ac6 ] The enet_qos_root_clk takes sim_enet_root_clk as parent. When registering enet_qos_root_clk, it will be put into clk orphan list, because sim_enet_root_clk is not ready. When sim_enet_root_clk is ready, clk_core_reparent_orphans_nolock will set enet_qos_root_clk parent to sim_enet_root_clk. Because CLK_OPS_PARENT_ENABLE is set, sim_enet_root_clk will be enabled and disabled during the enet_qos_root_clk reparent phase. All the above are correct. But with M7 booted early and using enet, M7 enet feature will be broken, because clk driver probe phase disable the needed clks, in case M7 firmware not configure sim_enet_root_clk. And tune the order would also save cpu cycles. Reviewed-by: Ye Li <ye.li@xxxxxxx> Signed-off-by: Peng Fan <peng.fan@xxxxxxx> Reviewed-by: Abel Vesa <abel.vesa@xxxxxxxxxx> Signed-off-by: Abel Vesa <abel.vesa@xxxxxxxxxx> Link: https://lore.kernel.org/r/20220815013428.476015-1-peng.fan@xxxxxxxxxxx Stable-dep-of: 855ae87a2073 ("clk: imx: scu: fix memleak on platform_device_add() fails") Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/clk/imx/clk-imx8mp.c b/drivers/clk/imx/clk-imx8mp.c index e89db568f5a8..652ae58c2735 100644 --- a/drivers/clk/imx/clk-imx8mp.c +++ b/drivers/clk/imx/clk-imx8mp.c @@ -665,8 +665,8 @@ static int imx8mp_clocks_probe(struct platform_device *pdev) hws[IMX8MP_CLK_CAN1_ROOT] = imx_clk_hw_gate2("can1_root_clk", "can1", ccm_base + 0x4350, 0); hws[IMX8MP_CLK_CAN2_ROOT] = imx_clk_hw_gate2("can2_root_clk", "can2", ccm_base + 0x4360, 0); hws[IMX8MP_CLK_SDMA1_ROOT] = imx_clk_hw_gate4("sdma1_root_clk", "ipg_root", ccm_base + 0x43a0, 0); - hws[IMX8MP_CLK_ENET_QOS_ROOT] = imx_clk_hw_gate4("enet_qos_root_clk", "sim_enet_root_clk", ccm_base + 0x43b0, 0); hws[IMX8MP_CLK_SIM_ENET_ROOT] = imx_clk_hw_gate4("sim_enet_root_clk", "enet_axi", ccm_base + 0x4400, 0); + hws[IMX8MP_CLK_ENET_QOS_ROOT] = imx_clk_hw_gate4("enet_qos_root_clk", "sim_enet_root_clk", ccm_base + 0x43b0, 0); hws[IMX8MP_CLK_GPU2D_ROOT] = imx_clk_hw_gate4("gpu2d_root_clk", "gpu2d_core", ccm_base + 0x4450, 0); hws[IMX8MP_CLK_GPU3D_ROOT] = imx_clk_hw_gate4("gpu3d_root_clk", "gpu3d_core", ccm_base + 0x4460, 0); hws[IMX8MP_CLK_UART1_ROOT] = imx_clk_hw_gate4("uart1_root_clk", "uart1", ccm_base + 0x4490, 0);