From a9dd63508d60c936303bd5c476914b3aadcc8460 Mon Sep 17 00:00:00 2001
From: Zoltan HERPAI <wigyori@uid0.hu>
Date: Thu, 2 Jul 2020 10:50:31 +0200
Subject: [PATCH] sunxi: add support for NextThing CHIP with Tzatziffy board

Specifications:
SoC     R8 @ 1Ghz
DRAM    512MiB DDR3-800E @ 360MHz
NAND    4GB
Power   DC 5V @ ~1A, 3.7V Li-Ion battery (Not included)
Storage SD-card via Tzatziffy board

Install method:
Standard sunxi method.

Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>
---
 package/boot/uboot-sunxi/Makefile             |  7 +++
 .../patches/250-add-mmc-to-chip.diff          | 43 +++++++++++++++++++
 target/linux/sunxi/image/cortexa8.mk          |  8 ++++
 3 files changed, 58 insertions(+)
 create mode 100644 package/boot/uboot-sunxi/patches/250-add-mmc-to-chip.diff

diff --git a/package/boot/uboot-sunxi/Makefile b/package/boot/uboot-sunxi/Makefile
index b4a1e07bd4..d248db886b 100644
--- a/package/boot/uboot-sunxi/Makefile
+++ b/package/boot/uboot-sunxi/Makefile
@@ -91,6 +91,12 @@ define U-Boot/Bananapro
   BUILD_DEVICES:=lemaker_bananapro
 endef
 
+define U-Boot/CHIP
+  BUILD_SUBTARGET:=cortexa8
+  NAME:=CHIP
+  BUILD_DEVICES:=chip
+endef
+
 define U-Boot/Cubieboard
   BUILD_SUBTARGET:=cortexa8
   NAME:=Cubieboard
@@ -354,6 +360,7 @@ UBOOT_TARGETS := \
 	bananapi_m2_berry \
 	Bananapi_M2_Ultra \
 	Bananapro \
+	CHIP \
 	Cubieboard \
 	Cubieboard2 \
 	Cubietruck \
diff --git a/package/boot/uboot-sunxi/patches/250-add-mmc-to-chip.diff b/package/boot/uboot-sunxi/patches/250-add-mmc-to-chip.diff
new file mode 100644
index 0000000000..5e24fc4c4b
--- /dev/null
+++ b/package/boot/uboot-sunxi/patches/250-add-mmc-to-chip.diff
@@ -0,0 +1,43 @@
+diff -ruN a/arch/arm/dts/sun5i-r8-chip.dts b/arch/arm/dts/sun5i-r8-chip.dts
+--- a/arch/arm/dts/sun5i-r8-chip.dts	2019-08-20 00:53:42.243401559 +0200
++++ b/arch/arm/dts/sun5i-r8-chip.dts	2019-08-20 00:34:38.000000000 +0200
+@@ -175,6 +175,16 @@
+ 	status = "okay";
+ };
+ 
++&mmc2 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&chip_sdio_pin>;
++	vmmc-supply = <&reg_vcc3v3>;
++/*	mmc-pwrseq = <&mmc2_pwrseq>;*/
++	bus-width = <4>;
++	broken-cd;
++	status = "okay";
++};
++
+ &ohci0 {
+ 	status = "okay";
+ };
+@@ -204,6 +214,11 @@
+ 		function = "gpio_in";
+ 		bias-pull-up;
+ 	};
++
++	chip_sdio_pin: chip_sdio_pin@0 {
++		pins = "PE4", "PE5", "PE6", "PE7", "PE8", "PE9";
++		function = "mmc2";
++	};
+ };
+ 
+ &reg_dcdc2 {
+diff -ruN configs.old/CHIP_defconfig configs/CHIP_defconfig
+--- a/configs/CHIP_defconfig	2019-01-14 23:02:36.000000000 +0100
++++ b/configs/CHIP_defconfig	2019-08-20 01:14:47.076936367 +0200
+@@ -13,7 +13,6 @@
+ # CONFIG_SPL_EFI_PARTITION is not set
+ CONFIG_DEFAULT_DEVICE_TREE="sun5i-r8-chip"
+ CONFIG_DFU_RAM=y
+-# CONFIG_MMC is not set
+ CONFIG_AXP_ALDO3_VOLT=3300
+ CONFIG_AXP_ALDO4_VOLT=3300
+ CONFIG_CONS_INDEX=2
diff --git a/target/linux/sunxi/image/cortexa8.mk b/target/linux/sunxi/image/cortexa8.mk
index ceb15a0fd8..72ff0b1d26 100644
--- a/target/linux/sunxi/image/cortexa8.mk
+++ b/target/linux/sunxi/image/cortexa8.mk
@@ -3,6 +3,14 @@
 # Copyright (C) 2013-2016 OpenWrt.org
 # Copyright (C) 2016 Yousong Zhou
 
+define Device/chip
+  DEVICE_VENDOR := NextThing
+  DEVICE_MODEL := CHIP
+  DEVICE_PACKAGES:=kmod-rtc-sunxi kmod-rtl8192cu
+  SOC := sun5i-r8
+endef
+TARGET_DEVICES += chip
+
 define Device/cubietech_a10-cubieboard
   DEVICE_VENDOR := Cubietech
   DEVICE_MODEL := Cubieboard
-- 
2.30.2