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ralink: improve mt7620n detection

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

SVN-Revision: 38847
This commit is contained in:
John Crispin 2013-11-18 09:35:32 +00:00
parent f307b35c8b
commit a17e5159ac
1 changed files with 57 additions and 0 deletions
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57
target/linux/ramips/patches-3.10/999-mt7620n.patch Normal file
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@ -0,0 +1,57 @@
Index: linux-3.10.18/arch/mips/include/asm/mach-ralink/mt7620.h
===================================================================
--- linux-3.10.18.orig/arch/mips/include/asm/mach-ralink/mt7620.h 2013-11-17 17:50:01.773020032 +0100
+++ linux-3.10.18/arch/mips/include/asm/mach-ralink/mt7620.h 2013-11-17 17:52:24.373025950 +0100
@@ -24,11 +24,8 @@
#define SYSC_REG_CPLL_CONFIG0 0x54
#define SYSC_REG_CPLL_CONFIG1 0x58
-#define MT7620N_CHIP_NAME0 0x33365452
-#define MT7620N_CHIP_NAME1 0x20203235
-
-#define MT7620A_CHIP_NAME0 0x3637544d
-#define MT7620A_CHIP_NAME1 0x20203032
+#define MT7620_CHIP_NAME0 0x3637544d
+#define MT7620_CHIP_NAME1 0x20203032
#define CHIP_REV_PKG_MASK 0x1
#define CHIP_REV_PKG_SHIFT 16
Index: linux-3.10.18/arch/mips/ralink/mt7620.c
===================================================================
--- linux-3.10.18.orig/arch/mips/ralink/mt7620.c 2013-11-17 17:50:01.773020032 +0100
+++ linux-3.10.18/arch/mips/ralink/mt7620.c 2013-11-17 17:52:24.373025950 +0100
@@ -167,22 +167,27 @@
u32 cfg0;
u32 pmu0;
u32 pmu1;
+ u32 bga;
n0 = __raw_readl(sysc + SYSC_REG_CHIP_NAME0);
n1 = __raw_readl(sysc + SYSC_REG_CHIP_NAME1);
+ rev = __raw_readl(sysc + SYSC_REG_CHIP_REV);
+ bga = (rev >> CHIP_REV_PKG_SHIFT) & CHIP_REV_PKG_MASK;
- if (n0 == MT7620N_CHIP_NAME0 && n1 == MT7620N_CHIP_NAME1) {
- name = "MT7620N";
- soc_info->compatible = "ralink,mt7620n-soc";
- } else if (n0 == MT7620A_CHIP_NAME0 && n1 == MT7620A_CHIP_NAME1) {
+ if (n0 != MT7620_CHIP_NAME0 || n1 != MT7620_CHIP_NAME1)
+ panic("mt7620: unknown SoC, n0:%08x n1:%08x\n", n0, n1);
+
+ if (bga) {
name = "MT7620A";
soc_info->compatible = "ralink,mt7620a-soc";
} else {
- panic("mt7620: unknown SoC, n0:%08x n1:%08x\n", n0, n1);
+ name = "MT7620N";
+ soc_info->compatible = "ralink,mt7620n-soc";
+#ifdef CONFIG_PCI
+ panic("mt7620n is only supported for non pci kernels");
+#endif
}
- rev = __raw_readl(sysc + SYSC_REG_CHIP_REV);
-
snprintf(soc_info->sys_type, RAMIPS_SYS_TYPE_LEN,
"Ralink %s ver:%u eco:%u",
name,