ramips: add proper mt7688 detection

Signed-off-by: John Crispin <blogic@openwrt.org>
Backport of r46957

git-svn-id: svn://svn.openwrt.org/openwrt/branches/chaos_calmer@47093 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/ramips/base-files/lib/preinit/07_set_preinit_iface_ramips b/target/linux/ramips/base-files/lib/preinit/07_set_preinit_iface_ramips
index cae6396..90b6d15 100644 (file)
--- a/target/linux/ramips/base-files/lib/preinit/07_set_preinit_iface_ramips
+++ b/target/linux/ramips/base-files/lib/preinit/07_set_preinit_iface_ramips
@@ -6,12 +6,12 @@
 . /lib/ramips.sh
 
 ramips_set_preinit_iface() {
-       RT3X5X=`cat /proc/cpuinfo | egrep "(RT3.5|RT5350|MT7628)"`
+       RT3X5X=`cat /proc/cpuinfo | egrep "(RT3.5|RT5350|MT7628|MT7688)"`
        if [ -n "${RT3X5X}" ]; then
                swconfig dev rt305x set reset 1
        fi
 
-       if echo $RT3X5X | egrep -q "(RT5350|MT7628)"; then
+       if echo $RT3X5X | egrep -q "(RT5350|MT7628|MT7688)"; then
                # This is a dirty hack to get by while the switch
                # problem is investigated. When VLAN is disabled, ICMP
                # pings work as expected, but TCP connections time

diff --git a/target/linux/ramips/patches-3.18/0301-mt7688-detect.patch b/target/linux/ramips/patches-3.18/0301-mt7688-detect.patch
new file mode 100644 (file)
index 0000000..fc05a98
--- /dev/null
+++ b/target/linux/ramips/patches-3.18/0301-mt7688-detect.patch
@@ -0,0 +1,114 @@
+--- a/arch/mips/include/asm/mach-ralink/mt7620.h
++++ b/arch/mips/include/asm/mach-ralink/mt7620.h
+@@ -17,6 +17,7 @@
+ 
+ #define SYSC_REG_CHIP_NAME0           0x00
+ #define SYSC_REG_CHIP_NAME1           0x04
++#define SYSC_REG_EFUSE_CFG            0x08
+ #define SYSC_REG_CHIP_REV             0x0c
+ #define SYSC_REG_SYSTEM_CONFIG0               0x10
+ #define SYSC_REG_SYSTEM_CONFIG1               0x14
+--- a/arch/mips/ralink/mt7620.c
++++ b/arch/mips/ralink/mt7620.c
+@@ -43,6 +43,9 @@
+ #define CLKCFG_FFRAC_MASK     0x001f
+ #define CLKCFG_FFRAC_USB_VAL  0x0003
+ 
++/* EFUSE bits */
++#define EFUSE_MT7688          0x100000
++
+ /* does the board have sdram or ddram */
+ static int dram_type;
+ 
+@@ -391,7 +394,7 @@
+ #define RINT(x)               ((x) / 1000000)
+ #define RFRAC(x)      (((x) / 1000) % 1000)
+ 
+-      if (ralink_soc == MT762X_SOC_MT7628AN) {
++      if (ralink_soc == MT762X_SOC_MT7628AN || ralink_soc == MT762X_SOC_MT7688) {
+               if (xtal_rate == MHZ(40))
+                       cpu_rate = MHZ(580);
+               else
+@@ -436,7 +439,8 @@
+       ralink_clk_add("10000e00.uart2", periph_rate);
+       ralink_clk_add("10180000.wmac", xtal_rate);
+ 
+-      if (IS_ENABLED(CONFIG_USB) && ralink_soc != MT762X_SOC_MT7628AN) {
++      if (IS_ENABLED(CONFIG_USB) &&
++              (ralink_soc == MT762X_SOC_MT7620A || ralink_soc == MT762X_SOC_MT7620N)) {
+               /*
+                * When the CPU goes into sleep mode, the BUS clock will be too low for
+                * USB to function properly
+@@ -536,8 +540,15 @@
+ #endif
+               }
+       } else if (n0 == MT7620_CHIP_NAME0 && n1 == MT7628_CHIP_NAME1) {
+-              ralink_soc = MT762X_SOC_MT7628AN;
+-              name = "MT7628AN";
++              u32 efuse = __raw_readl(sysc + SYSC_REG_EFUSE_CFG);
++
++              if (efuse & EFUSE_MT7688) {
++                      ralink_soc = MT762X_SOC_MT7688;
++                      name = "MT7688";
++              } else {
++                      ralink_soc = MT762X_SOC_MT7628AN;
++                      name = "MT7628AN";
++              }
+               soc_info->compatible = "ralink,mt7628an-soc";
+       } else {
+               panic("mt762x: unknown SoC, n0:%08x n1:%08x\n", n0, n1);
+@@ -551,13 +562,13 @@
+ 
+       cfg0 = __raw_readl(sysc + SYSC_REG_SYSTEM_CONFIG0);
+ 
+-      if (ralink_soc == MT762X_SOC_MT7628AN)
++      if (ralink_soc == MT762X_SOC_MT7628AN || ralink_soc == MT762X_SOC_MT7688)
+               dram_type = ((cfg0&0x00000001) == 0x00000001)?SYSCFG0_DRAM_TYPE_DDR1_MT7628:SYSCFG0_DRAM_TYPE_DDR2_MT7628;
+       else
+               dram_type = (cfg0 >> SYSCFG0_DRAM_TYPE_SHIFT) & SYSCFG0_DRAM_TYPE_MASK;
+ 
+       soc_info->mem_base = MT7620_DRAM_BASE;
+-      if (ralink_soc == MT762X_SOC_MT7628AN)
++      if (ralink_soc == MT762X_SOC_MT7628AN || ralink_soc == MT762X_SOC_MT7688)
+               mt7628_dram_init(soc_info);
+       else
+               mt7620_dram_init(soc_info);
+@@ -570,7 +581,7 @@
+       pr_info("Digital PMU set to %s control\n",
+               (pmu1 & DIG_SW_SEL) ? ("sw") : ("hw"));
+ 
+-      if (ralink_soc == MT762X_SOC_MT7628AN)
++      if (ralink_soc == MT762X_SOC_MT7628AN || ralink_soc == MT762X_SOC_MT7688)
+               rt2880_pinmux_data = mt7628an_pinmux_data;
+       else
+               rt2880_pinmux_data = mt7620a_pinmux_data;
+--- a/arch/mips/include/asm/mach-ralink/ralink_regs.h
++++ b/arch/mips/include/asm/mach-ralink/ralink_regs.h
+@@ -24,6 +24,7 @@
+       MT762X_SOC_MT7620N,
+       MT762X_SOC_MT7621AT,
+       MT762X_SOC_MT7628AN,
++      MT762X_SOC_MT7688,
+ };
+ extern enum ralink_soc_type ralink_soc;
+ 
+--- a/drivers/net/ethernet/ralink/esw_rt3052.c
++++ b/drivers/net/ethernet/ralink/esw_rt3052.c
+@@ -611,7 +611,7 @@
+               rt305x_mii_write(esw, 0, 29, 0x598b);
+               /* select local register */
+               rt305x_mii_write(esw, 0, 31, 0x8000);
+-      } else if (ralink_soc == MT762X_SOC_MT7628AN) {
++      } else if (ralink_soc == MT762X_SOC_MT7628AN || ralink_soc == MT762X_SOC_MT7688) {
+               int i;
+ //            u32 phy_val;
+               u32 val;
+@@ -1042,7 +1042,7 @@
+       int shift = attr->id == RT5350_ESW_ATTR_PORT_TR_GOOD ? 0 : 16;
+       u32 reg;
+ 
+-      if ((ralink_soc != RT305X_SOC_RT5350) && (ralink_soc != MT762X_SOC_MT7628AN))
++      if ((ralink_soc != RT305X_SOC_RT5350) && (ralink_soc != MT762X_SOC_MT7628AN) && (ralink_soc != MT762X_SOC_MT7688))
+               return -EINVAL;
+ 
+       if (idx < 0 || idx >= RT305X_ESW_NUM_LANWAN)