linux-kernel - [PATCH 6/6] clk: imx93: keep sys ctr clock always on

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Message-Id: <20221028095211.2598312-7-peng.fan@oss.nxp.com>
Date:   Fri, 28 Oct 2022 17:52:11 +0800
From:   "Peng Fan (OSS)" <peng.fan@....nxp.com>
To:     abelvesa@...nel.org, abel.vesa@...aro.org, mturquette@...libre.com,
        sboyd@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org
Cc:     linux-imx@....com, linux-clk@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Jacky Bai <ping.bai@....com>,
        Peng Fan <peng.fan@....com>
Subject: [PATCH 6/6] clk: imx93: keep sys ctr clock always on

From: Jacky Bai <ping.bai@....com>

Keep sys ctr clock always on to make sure its register
can be accessed for cpuidle.

Reviewed-by: Peng Fan <peng.fan@....com>
Signed-off-by: Jacky Bai <ping.bai@....com>
Signed-off-by: Peng Fan <peng.fan@....com>
---
 drivers/clk/imx/clk-imx93.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/imx/clk-imx93.c b/drivers/clk/imx/clk-imx93.c
index 7dace96f36df..b42a877ecca1 100644
--- a/drivers/clk/imx/clk-imx93.c
+++ b/drivers/clk/imx/clk-imx93.c
@@ -242,7 +242,8 @@ static const struct imx93_clk_ccgr {
 	{ IMX93_CLK_HSIO_32K_GATE,	"hsio_32k",	"osc_32k",		0x9dc0, },
 	{ IMX93_CLK_ENET1_GATE,		"enet1",	"wakeup_axi_root",	0x9e00, },
 	{ IMX93_CLK_ENET_QOS_GATE,	"enet_qos",	"wakeup_axi_root",	0x9e40, },
-	{ IMX93_CLK_SYS_CNT_GATE,	"sys_cnt",	"osc_24m",		0x9e80, },
+	/* Critical because clk accessed during CPU idle */
+	{ IMX93_CLK_SYS_CNT_GATE,	"sys_cnt",	"osc_24m",		0x9e80, CLK_IS_CRITICAL},
 	{ IMX93_CLK_TSTMR1_GATE,	"tstmr1",	"bus_aon_root",		0x9ec0, },
 	{ IMX93_CLK_TSTMR2_GATE,	"tstmr2",	"bus_wakeup_root",	0x9f00, },
 	{ IMX93_CLK_TMC_GATE,		"tmc",		"osc_24m",		0x9f40, },
-- 
2.37.1