[openwrt/openwrt] sunxi: add rtc-sun6i driver package

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/e178d9a5494747a9b6ea34f2fc9e798b4b1ecc16

commit e178d9a5494747a9b6ea34f2fc9e798b4b1ecc16
Author: Zhao Yu <574249312 at qq.com>
AuthorDate: Sat Aug 28 10:35:12 2021 +0800

    sunxi: add rtc-sun6i driver package
    
    AP6212 wifi need wifi_pwrseq, but from OrangePi Lite 2 dts :
    
    wifi_pwrseq: wifi_pwrseq {
            compatible = "mmc-pwrseq-simple";
            clocks = <&rtc 1>;
            clock-names = "ext_clock";
            reset-gpios = <&r_pio 1 3 GPIO_ACTIVE_LOW>; /* PM3 */
            post-power-on-delay-ms = <200>;
    };
    
    this pwrseq need rtc clock, or kernel won't find this device.
    but now rtc-sunxi.c only support A10/A20.
    Orangepi Lite 2 use H6 ,from rtc-sun6i.c show compatible is
            { .compatible = "allwinner,sun6i-a31-rtc" },
            { .compatible = "allwinner,sun8i-a23-rtc" },
            { .compatible = "allwinner,sun8i-h3-rtc" },
            { .compatible = "allwinner,sun8i-r40-rtc" },
            { .compatible = "allwinner,sun8i-v3-rtc" },
            { .compatible = "allwinner,sun50i-h5-rtc" },
            { .compatible = "allwinner,sun50i-h6-rtc" },
    So it need this to let kernel find this mmc wifi device.
    
    As suggested by hauke, let it build as package.
    
    Signed-off-by: Zhao Yu <574249312 at qq.com>
---
 target/linux/sunxi/modules.mk | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/target/linux/sunxi/modules.mk b/target/linux/sunxi/modules.mk
index 99f4db7604..244c9ca508 100644
--- a/target/linux/sunxi/modules.mk
+++ b/target/linux/sunxi/modules.mk
@@ -20,6 +20,24 @@ endef
 
 $(eval $(call KernelPackage,rtc-sunxi))
 
+define KernelPackage/rtc-sun6i
+    SUBMENU:=$(OTHER_MENU)
+    TITLE:=Sun6i SoC built-in RTC support
+    DEPENDS:=@TARGET_sunxi
+    $(call AddDepends/rtc)
+    KCONFIG:= \
+	CONFIG_RTC_DRV_SUN6I \
+	CONFIG_RTC_CLASS=y
+    FILES:=$(LINUX_DIR)/drivers/rtc/rtc-sun6i.ko
+    AUTOLOAD:=$(call AutoLoad,50,rtc-sun6i)
+endef
+
+define KernelPackage/rtc-sun6i/description
+ Support for the AllWinner sun6i SoC's onboard RTC
+endef
+
+$(eval $(call KernelPackage,rtc-sun6i))
+
 define KernelPackage/sunxi-ir
     SUBMENU:=$(OTHER_MENU)
     TITLE:=Sunxi SoC built-in IR support (A20)