| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.19 039/114] clk: hi3660: Mark clk_gate_ufs_subsys as critical | Date | Thu, 23 May 2019 21:05:38 +0200 |
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From: Leo Yan <leo.yan@linaro.org>
commit 9f77a60669d13ed4ddfa6cd7374c9d88da378ffa upstream.
clk_gate_ufs_subsys is a system bus clock, turning off it will introduce lockup issue during system suspend flow. Let's mark clk_gate_ufs_subsys as critical clock, thus keeps it on during system suspend and resume.
Fixes: d374e6fd5088 ("clk: hisilicon: Add clock driver for hi3660 SoC") Cc: stable@vger.kernel.org Cc: Zhong Kaihua <zhongkaihua@huawei.com> Cc: John Stultz <john.stultz@linaro.org> Cc: Zhangfei Gao <zhangfei.gao@linaro.org> Suggested-by: Dong Zhang <zhangdong46@hisilicon.com> Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/clk/hisilicon/clk-hi3660.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/clk/hisilicon/clk-hi3660.c +++ b/drivers/clk/hisilicon/clk-hi3660.c @@ -163,8 +163,12 @@ static const struct hisi_gate_clock hi36 "clk_isp_snclk_mux", CLK_SET_RATE_PARENT, 0x50, 17, 0, }, { HI3660_CLK_GATE_ISP_SNCLK2, "clk_gate_isp_snclk2", "clk_isp_snclk_mux", CLK_SET_RATE_PARENT, 0x50, 18, 0, }, + /* + * clk_gate_ufs_subsys is a system bus clock, mark it as critical + * clock and keep it on for system suspend and resume. + */ { HI3660_CLK_GATE_UFS_SUBSYS, "clk_gate_ufs_subsys", "clk_div_sysbus", - CLK_SET_RATE_PARENT, 0x50, 21, 0, }, + CLK_SET_RATE_PARENT | CLK_IS_CRITICAL, 0x50, 21, 0, }, { HI3660_PCLK_GATE_DSI0, "pclk_gate_dsi0", "clk_div_cfgbus", CLK_SET_RATE_PARENT, 0x50, 28, 0, }, { HI3660_PCLK_GATE_DSI1, "pclk_gate_dsi1", "clk_div_cfgbus",
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