feat(longan): add uart7 & 5000mA bat

huangcm

2025-07-03 5fc6eec0444a62f7a596240b200dd837059dba70

 longan/brandy/brandy-2.0/u-boot-2018/board/sunxi/power_manage.c
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@@ -476,6 +476,7 @@
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 		pmu_set_sys_mode(0);
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 	}
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+#if 0    
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     if (bat_exist == 1) {
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         /* When the battery exists, it can only be turned on by power key */
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         if (pmu_axp707_get_poweron_source() != AXP_BOOT_SOURCE_BUTTON &&
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@@ -489,8 +490,9 @@
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             pmu_set_sys_mode(0);
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         }
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     }
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+#endif
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-	switch (val) {
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+    switch (val) {
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 	case AXP_BOOT_SOURCE_BUTTON:
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 		strncpy(bootreason, "button", sizeof("button"));
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 		break;