[PATCH 03/10] clk: imx: scu: bypass cpu clock save and restore
From: Dong Aisheng <aisheng.dong@nxp.com>
Date: 2021-06-04 09:11:04
Also in:
linux-clk
Subsystem:
common clk framework, nxp i.mx clock drivers, the rest · Maintainers:
Stephen Boyd, Brian Masney, Jerome Brunet, Abel Vesa, Linus Torvalds
CPU clock is managed by ATF. No need save and restore. Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> --- drivers/clk/imx/clk-scu.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c
index 680b2650fd45..d87a1a1b297e 100644
--- a/drivers/clk/imx/clk-scu.c
+++ b/drivers/clk/imx/clk-scu.c@@ -538,6 +538,11 @@ static int imx_clk_scu_probe(struct platform_device *pdev) static int __maybe_unused imx_clk_scu_suspend(struct device *dev) { struct clk_scu *clk = dev_get_drvdata(dev); + u32 rsrc_id = clk->rsrc_id; + + if ((rsrc_id == IMX_SC_R_A35) || (rsrc_id == IMX_SC_R_A53) || + (rsrc_id == IMX_SC_R_A72)) + return 0; clk->rate = clk_hw_get_rate(&clk->hw); clk->is_enabled = clk_hw_is_enabled(&clk->hw);
@@ -554,8 +559,13 @@ static int __maybe_unused imx_clk_scu_suspend(struct device *dev) static int __maybe_unused imx_clk_scu_resume(struct device *dev) { struct clk_scu *clk = dev_get_drvdata(dev); + u32 rsrc_id = clk->rsrc_id; int ret = 0; + if ((rsrc_id == IMX_SC_R_A35) || (rsrc_id == IMX_SC_R_A53) || + (rsrc_id == IMX_SC_R_A72)) + return 0; + if (clk->rate) { ret = clk_scu_set_rate(&clk->hw, clk->rate, 0); dev_dbg(dev, "restore rate %d %s\n", clk->rate,
--
2.25.1
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