ramips: add LinkIt Smart7688 support

Signed-off-by: John Crispin <blogic@openwrt.org>

Backport of r47203

git-svn-id: svn://svn.openwrt.org/openwrt/branches/chaos_calmer@47227 3c298f89-4303-0410-b956-a3cf2f4a3e73

7 files changed, 315 insertions, 0 deletions

diff --git a/target/linux/ramips/base-files/etc/board.d/02_network b/target/linux/ramips/base-files/etc/board.d/02_network
index 6affe9feb2..19ef3f739c 100755
--- a/target/linux/ramips/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/base-files/etc/board.d/02_network
@@ -45,6 +45,8 @@ ramips_setup_interfaces()
 
 	3g150b | \
 	3g300m | \
+	linkits7688 | \
+	linkits7688d | \
 	microwrt | \
 	w150m | \
 	zte-q7 | \
@@ -377,6 +379,11 @@ ramips_setup_macs()
 		wan_mac="$(grep -m1 mac= "/dev/mtd${index}" | cut -d= -f2)"
 		lan_mac=$wan_mac
 		;;
+	linkits7688 | \
+	linkits7688d)
+		wan_mac=$(mtd_get_mac_binary factory 4)
+		lan_mac=$(mtd_get_mac_binary factory 46)
+		;;
 	*)
 		lan_mac=$(cat /sys/class/net/eth0/address)
 		wan_mac=$(macaddr_add "$lan_mac" 1)
diff --git a/target/linux/ramips/base-files/lib/ramips.sh b/target/linux/ramips/base-files/lib/ramips.sh
index d2a1856cd8..82a1f91397 100755
--- a/target/linux/ramips/base-files/lib/ramips.sh
+++ b/target/linux/ramips/base-files/lib/ramips.sh
@@ -418,6 +418,15 @@ ramips_board_detect() {
 	*"Mediatek MT7628AN evaluation board")
 		name="mt7628"
 		;;
+	*"MediaTek LinkIt Smart7688")
+		linkit="$(dd bs=1 skip=1024 count=12 if=/dev/mtd2 2> /dev/null)"
+		if [ "${linkit}" = "LINKITS7688D" ]; then
+			name="linkits7688d"
+			RAMIPS_MODEL="${machine} DUO"
+		else
+			name="linkits7688"
+		fi
+		;;
 	*)
 		name="generic"
 		;;
diff --git a/target/linux/ramips/base-files/lib/upgrade/platform.sh b/target/linux/ramips/base-files/lib/upgrade/platform.sh
index 39d74d75a3..23f4575dc6 100755
--- a/target/linux/ramips/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/base-files/lib/upgrade/platform.sh
@@ -60,6 +60,8 @@ platform_check_image() {
 	ht-tm02 | \
 	hw550-3g | \
 	ip2202 | \
+	linkits7688 | \
+	linkits7688d | \
 	m2m | \
 	m3 | \
 	m4 | \
diff --git a/target/linux/ramips/dts/LINKIT7688.dts b/target/linux/ramips/dts/LINKIT7688.dts
new file mode 100644
index 0000000000..a4d75cb435
--- /dev/null
+++ b/target/linux/ramips/dts/LINKIT7688.dts
@@ -0,0 +1,166 @@
+/dts-v1/;
+
+/include/ "mt7628an.dtsi"
+
+/ {
+	compatible = "mediatek,linkit", "mediatek,mt7628an-soc";
+	model = "MediaTek LinkIt Smart7688";
+
+	chosen {
+		bootargs = "console=ttyS2,57600";
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x8000000>;
+	};
+
+	pinctrl {
+		state_default: pinctrl0 {
+			gpio {
+				ralink,group = "gpio";
+				ralink,function = "gpio";
+			};
+			perst {
+				ralink,group = "perst";
+				ralink,function = "gpio";
+			};
+			refclk {
+				ralink,group = "refclk";
+				ralink,function = "gpio";
+			};
+			i2s {
+				ralink,group = "i2s";
+				ralink,function = "gpio";
+			};
+			spis {
+				ralink,group = "spis";
+				ralink,function = "gpio";
+			};
+			wled_kn {
+				ralink,group = "wled_kn";
+				ralink,function = "gpio";
+			};
+			wled_an {
+				ralink,group = "wled_an";
+				ralink,function = "wled_an";
+			};
+			wdt {
+				ralink,group = "wdt";
+				ralink,function = "gpio";
+			};
+		};
+	};
+
+	palmbus@10000000 {
+		spi@b00 {
+			status = "okay";
+
+			pinctrl-names = "default";
+			pinctrl-0 = <&spi_pins>, <&spi_cs1_pins>;
+
+			m25p80@0 {
+				#address-cells = <1>;
+				#size-cells = <1>;
+				compatible = "mx25l25635e";
+				reg = <0 0>;
+				linux,modalias = "m25p80", "mx25l25635e";
+				spi-max-frequency = <40000000>;
+				m25p,chunked-io = <31>;
+
+				partition@0 {
+					label = "u-boot";
+					reg = <0x0 0x30000>;
+					read-only;
+				};
+
+				partition@30000 {
+					label = "u-boot-env";
+					reg = <0x30000 0x10000>;
+				};
+
+				factory: partition@40000 {
+					label = "factory";
+					reg = <0x40000 0x10000>;
+					read-only;
+				};
+
+				partition@50000 {
+					label = "firmware";
+					reg = <0x50000 0x1fb0000>;
+				};
+			};
+
+			spidev@1 {
+				#address-cells = <1>;
+				#size-cells = <1>;
+				compatible = "spidev";
+				reg = <1 0>;
+				spi-max-frequency = <40000000>;
+			};
+		};
+
+		i2c@900 {
+			status = "okay";
+		};
+
+		uart1@d00 {
+			status = "okay";
+		};
+
+		uart2@e00 {
+			status = "okay";
+		};
+
+		pwm@5000 {
+			status = "okay";
+		};
+	};
+
+	ethernet@10100000 {
+		mtd-mac-address = <&factory 0x28>;
+	};
+
+	sdhci@10130000 {
+		status = "okay";
+		mediatek,cd-high;
+//		mediatek,cd-poll;
+	};
+
+	bootstrap {
+		compatible = "mediatek,linkit";
+
+		status = "okay";
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+		wifi {
+			label = "mediatek:orange:wifi";
+			gpios = <&wgpio 0 0>;
+			default-state = "on";
+		};
+	};
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <20>;
+		wps {
+			label = "reset";
+			gpios = <&gpio1 6 1>;
+			linux,code = <0x211>;
+		};
+	};
+
+	wgpio: gpio-wifi {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		compatible = "mediatek,gpio-wifi";
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+};
diff --git a/target/linux/ramips/image/Makefile b/target/linux/ramips/image/Makefile
index 3bfbcd0b6d..b4d0897780 100644
--- a/target/linux/ramips/image/Makefile
+++ b/target/linux/ramips/image/Makefile
@@ -201,6 +201,10 @@ ralink_default_fw_size_16M=16121856
 BuildFirmware/Default16M/squashfs=$(call BuildFirmware/OF,$(1),$(2),$(3),$(ralink_default_fw_size_16M),$(4))
 BuildFirmware/Default16M/initramfs=$(call BuildFirmware/OF/initramfs,$(1),$(2),$(3),$(4))
 
+ralink_default_fw_size_32M=33226752
+BuildFirmware/Default32M/squashfs=$(call BuildFirmware/OF,$(1),$(2),$(3),$(ralink_default_fw_size_32M),$(4))
+BuildFirmware/Default32M/initramfs=$(call BuildFirmware/OF/initramfs,$(1),$(2),$(3),$(4))
+
 # Build images for a custom sized flash layout
 # $(1) = squashfs/initramfs
 # $(2) = lowercase board name
@@ -982,6 +986,21 @@ define Image/Build/Profile/Default
 endef
 endif
 
+
+#
+# MT7688 Profiles
+#
+
+Image/Build/Profile/MT7688=$(call BuildFirmware/Default4M/$(1),$(1),mt7628,MT7628)
+Image/Build/Profile/LinkIt7688=$(call BuildFirmware/Default32M/$(1),$(1),LinkIt7688,LINKIT7688)
+
+ifeq ($(SUBTARGET),mt7628)
+define Image/Build/Profile/Default
+	$(call Image/Build/Profile/MT7688,$(1))
+	$(call Image/Build/Profile/LinkIt7688,$(1))
+endef
+endif
+
 ifndef TARGET_DEVICES
 #
 # Generic Targets - only needed for legacy image building code
diff --git a/target/linux/ramips/mt7688/profiles/01-mediatek.mk b/target/linux/ramips/mt7688/profiles/01-mediatek.mk
new file mode 100644
index 0000000000..4ba838fb92
--- /dev/null
+++ b/target/linux/ramips/mt7688/profiles/01-mediatek.mk
@@ -0,0 +1,18 @@
+#
+# Copyright (C) 2015 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+define Profile/LinkIt7688
+	NAME:=LinkIt7688
+	PACKAGES:=\
+		kmod-usb-core kmod-usb2 kmod-usb-ohci \
+		uboot-envtools kmod-ledtrig-netdev
+endef
+
+define Profile/LinkIt7688/Description
+	Default package set compatible with most boards.
+endef
+$(eval $(call Profile,LinkIt7688))
diff --git a/target/linux/ramips/patches-3.18/0200-linkit_bootstrap.patch b/target/linux/ramips/patches-3.18/0200-linkit_bootstrap.patch
new file mode 100644
index 0000000000..1471c7d329
--- /dev/null
+++ b/target/linux/ramips/patches-3.18/0200-linkit_bootstrap.patch
@@ -0,0 +1,94 @@
+--- a/drivers/misc/Makefile
++++ b/drivers/misc/Makefile
+@@ -56,3 +56,4 @@
+ obj-$(CONFIG_ECHO)		+= echo/
+ obj-$(CONFIG_VEXPRESS_SYSCFG)	+= vexpress-syscfg.o
+ obj-$(CONFIG_CXL_BASE)		+= cxl/
++obj-$(CONFIG_SOC_MT7620)	+= linkit.o
+--- /dev/null
++++ b/drivers/misc/linkit.c
+@@ -0,0 +1,84 @@
++/*
++ *  This program is free software; you can redistribute it and/or modify
++ *  it under the terms of the GNU General Public License version 2 as
++ *  publishhed by the Free Software Foundation.
++ *
++ *  Copyright (C) 2015 John Crispin <blogic@openwrt.org>
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/of.h>
++#include <linux/mtd/mtd.h>
++#include <linux/gpio.h>
++
++#define LINKIT_LATCH_GPIO	11
++
++struct linkit_hw_data {
++	char board[16];
++	char rev[16];
++};
++
++static void sanify_string(char *s)
++{
++	int i;
++
++	for (i = 0; i < 15; i++)
++		if (s[i] <= 0x20)
++			s[i] = '\0';
++	s[15] = '\0';
++}
++
++static int linkit_probe(struct platform_device *pdev)
++{
++	struct linkit_hw_data hw;
++	struct mtd_info *mtd;
++	size_t retlen;
++	int ret;
++
++	mtd = get_mtd_device_nm("factory");
++	if (IS_ERR(mtd))
++		return PTR_ERR(mtd);
++
++	ret = mtd_read(mtd, 0x400, sizeof(hw), &retlen, (u_char *) &hw);
++	put_mtd_device(mtd);
++
++	sanify_string(hw.board);
++	sanify_string(hw.rev);
++
++	dev_info(&pdev->dev, "Version  : %s\n", hw.board);
++	dev_info(&pdev->dev, "Revision : %s\n", hw.rev);
++
++	if (!strcmp(hw.board, "LINKITS7688")) {
++		dev_info(&pdev->dev, "setting up bootstrap latch\n");
++
++		if (devm_gpio_request(&pdev->dev, LINKIT_LATCH_GPIO, "bootstrap")) {
++			dev_err(&pdev->dev, "failed to setup bootstrap gpio\n");
++			return -1;
++		}
++		gpio_direction_output(LINKIT_LATCH_GPIO, 0);
++	}
++
++	return 0;
++}
++
++static const struct of_device_id linkit_match[] = {
++	{ .compatible = "mediatek,linkit" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, linkit_match);
++
++static struct platform_driver linkit_driver = {
++	.probe = linkit_probe,
++	.driver = {
++		.name = "mtk-linkit",
++		.owner = THIS_MODULE,
++		.of_match_table = linkit_match,
++	},
++};
++
++int __init linkit_init(void)
++{
++	return platform_driver_register(&linkit_driver);
++}
++late_initcall_sync(linkit_init);