add stmac read mac form eeprom

hc

2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/power/reset/sc27xx-poweroff.c
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@@ -6,6 +6,7 @@
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 #include <linux/cpu.h>
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 #include <linux/kernel.h>
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+#include <linux/module.h>
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 #include <linux/platform_device.h>
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 #include <linux/pm.h>
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 #include <linux/regmap.h>
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@@ -13,6 +14,8 @@
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 #define SC27XX_PWR_PD_HW	0xc2c
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 #define SC27XX_PWR_OFF_EN	BIT(0)
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+#define SC27XX_SLP_CTRL		0xdf0
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+#define SC27XX_LDO_XTL_EN	BIT(3)
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 static struct regmap *regmap;
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@@ -27,10 +30,13 @@
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  */
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 static void sc27xx_poweroff_shutdown(void)
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 {
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-#ifdef CONFIG_PM_SLEEP_SMP
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-	int cpu = smp_processor_id();
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+#ifdef CONFIG_HOTPLUG_CPU
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+	int cpu;
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-	freeze_secondary_cpus(cpu);
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+	for_each_online_cpu(cpu) {
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+		if (cpu != smp_processor_id())
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+			remove_cpu(cpu);
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+	}
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 #endif
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 }
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@@ -40,6 +46,9 @@
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 static void sc27xx_poweroff_do_poweroff(void)
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 {
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+	/* Disable the external subsys connection's power firstly */
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+	regmap_write(regmap, SC27XX_SLP_CTRL, SC27XX_LDO_XTL_EN);
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+
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 	regmap_write(regmap, SC27XX_PWR_PD_HW, SC27XX_PWR_OFF_EN);
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 }
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@@ -63,4 +72,8 @@
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 		.name = "sc27xx-poweroff",
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 	},
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 };
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-builtin_platform_driver(sc27xx_poweroff_driver);
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+module_platform_driver(sc27xx_poweroff_driver);
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+
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+MODULE_DESCRIPTION("Power off driver for SC27XX PMIC Device");
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+MODULE_AUTHOR("Baolin Wang <baolin.wang@unisoc.com>");
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+MODULE_LICENSE("GPL v2");