From a740d7350ff77ce1ebbdc3b9c548dd3bcaf39b31 Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Mon, 3 Apr 2023 17:52:58 +0800 Subject: clk: imx: imx93: add mcore_booted module paratemter Add mcore_booted boot parameter which could simplify AMP clock management. To i.MX93, there is CCM(clock control Module) to generate clock root clock, anatop(analog PLL module) to generate PLL, and LPCG (clock gating) to gate clocks to peripherals. As below: anatop->ccm->lpcg->peripheral Linux handles the clock management and the auxiliary core is under control of Linux. Although there is per hardware domain control for LPCG and CCM, auxiliary core normally only use LPCG hardware domain control to avoid linux gate off the clk to peripherals and leave CCM ana anatop to Linux. Reviewed-by: Ye Li Signed-off-by: Peng Fan Reviewed-by: Abel Vesa Link: https://lore.kernel.org/r/20230403095300.3386988-6-peng.fan@oss.nxp.com Signed-off-by: Abel Vesa --- drivers/clk/imx/clk-composite-93.c | 8 +++++++- drivers/clk/imx/clk-imx93.c | 2 ++ 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/clk/imx/clk-composite-93.c b/drivers/clk/imx/clk-composite-93.c index 74a66b0203e4..81164bdcd6cc 100644 --- a/drivers/clk/imx/clk-composite-93.c +++ b/drivers/clk/imx/clk-composite-93.c @@ -222,7 +222,7 @@ struct clk_hw *imx93_clk_composite_flags(const char *name, const char * const *p hw = clk_hw_register_composite(NULL, name, parent_names, num_parents, mux_hw, &clk_mux_ro_ops, div_hw, &clk_divider_ro_ops, NULL, NULL, flags); - } else { + } else if (!mcore_booted) { gate = kzalloc(sizeof(*gate), GFP_KERNEL); if (!gate) goto fail; @@ -238,6 +238,12 @@ struct clk_hw *imx93_clk_composite_flags(const char *name, const char * const *p &imx93_clk_composite_divider_ops, gate_hw, &imx93_clk_composite_gate_ops, flags | CLK_SET_RATE_NO_REPARENT); + } else { + hw = clk_hw_register_composite(NULL, name, parent_names, num_parents, + mux_hw, &imx93_clk_composite_mux_ops, div_hw, + &imx93_clk_composite_divider_ops, NULL, + &imx93_clk_composite_gate_ops, + flags | CLK_SET_RATE_NO_REPARENT); } if (IS_ERR(hw)) diff --git a/drivers/clk/imx/clk-imx93.c b/drivers/clk/imx/clk-imx93.c index 8d0974db6bfd..de1ed1d8ba54 100644 --- a/drivers/clk/imx/clk-imx93.c +++ b/drivers/clk/imx/clk-imx93.c @@ -352,6 +352,8 @@ static struct platform_driver imx93_clk_driver = { }, }; module_platform_driver(imx93_clk_driver); +module_param(mcore_booted, bool, 0444); +MODULE_PARM_DESC(mcore_booted, "See Cortex-M core is booted or not"); MODULE_DESCRIPTION("NXP i.MX93 clock driver"); MODULE_LICENSE("GPL v2"); -- cgit