clk: imx93: keep sys ctr clock always on

Keep sys ctr clock always on to make sure its register
can be accessed for cpuidle.
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/20221028095211.2598312-7-peng.fan@oss.nxp.com

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, },