ar71xx: init external_reset for AR933X
authorGabor Juhos <juhosg@openwrt.org>
Wed, 1 Jun 2011 13:12:30 +0000 (13:12 +0000)
committerGabor Juhos <juhosg@openwrt.org>
Wed, 1 Jun 2011 13:12:30 +0000 (13:12 +0000)
SVN-Revision: 27083

target/linux/ar71xx/files/arch/mips/ar71xx/dev-ar9xxx-wmac.c
target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h

index d410472..e5cd4d3 100644 (file)
@@ -68,6 +68,31 @@ static int ar933x_r1_get_wmac_revision(void)
        return ar71xx_soc_rev;
 }
 
+static int ar933x_wmac_reset(void)
+{
+       unsigned retries = 0;
+
+       ar71xx_device_stop(AR933X_RESET_WMAC);
+       ar71xx_device_start(AR933X_RESET_WMAC);
+
+       while (1) {
+               u32 bootstrap;
+
+               bootstrap = ar71xx_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
+               if ((bootstrap & AR933X_BOOTSTRAP_EEPBUSY) == 0)
+                       return 0;
+
+               if (retries > 20)
+                       break;
+
+               udelay(10000);
+               retries++;
+       }
+
+       pr_err("ar93xx: WMAC reset timed out");
+       return -ETIMEDOUT;
+}
+
 static void ar933x_wmac_init(void)
 {
        ar9xxx_wmac_device.name = "ar933x_wmac";
@@ -78,6 +103,10 @@ static void ar933x_wmac_init(void)
 
        if (ar71xx_soc_rev == 1)
                ar9xxx_wmac_data.get_mac_revision = ar933x_r1_get_wmac_revision;
+
+       ar9xxx_wmac_data.external_reset = ar933x_wmac_reset;
+
+       ar933x_wmac_reset();
 }
 
 static void ar934x_wmac_init(void)
index a001f89..f78ae16 100644 (file)
@@ -609,6 +609,7 @@ void ar71xx_ddr_flush(u32 reg);
 
 #define AR933X_RESET_REG_RESET_MODULE          0x1c
 #define AR933X_RESET_REG_BOOTSTRAP             0xac
+#define AR933X_BOOTSTRAP_EEPBUSY               BIT(4)
 #define AR933X_BOOTSTRAP_REF_CLK_40            BIT(0)
 
 #define AR934X_RESET_REG_RESET_MODULE          0x1c
@@ -672,6 +673,7 @@ void ar71xx_ddr_flush(u32 reg);
 #define AR724X_RESET_USB_PHY           BIT(4)
 #define AR724X_RESET_USBSUS_OVERRIDE   BIT(3)
 
+#define AR933X_RESET_WMAC              BIT(11)
 #define AR933X_RESET_GE1_MDIO          BIT(23)
 #define AR933X_RESET_GE0_MDIO          BIT(22)
 #define AR933X_RESET_GE1_MAC           BIT(13)