Merge branch 'u-boot-imx/master' into 'u-boot-arm/master'

[oweals/u-boot.git] / arch / arm / cpu / armv7 / am33xx / sys_info.c

diff --git a/arch/arm/cpu/armv7/am33xx/sys_info.c b/arch/arm/cpu/armv7/am33xx/sys_info.c
index 63afaaa328b756f265a7cd69f3c9d100ca5d039a..50eb598ff2686142c364a6688b47650e5c64d5fe 100644 (file)
--- a/arch/arm/cpu/armv7/am33xx/sys_info.c
+++ b/arch/arm/cpu/armv7/am33xx/sys_info.c
@@ -17,6 +17,7 @@
 #include <asm/arch/sys_proto.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/clock.h>
+#include <power/tps65910.h>
 
 struct ctrl_stat *cstat = (struct ctrl_stat *)CTRL_BASE;
 
@@ -119,3 +120,59 @@ int print_cpuinfo(void)
        return 0;
 }
 #endif /* CONFIG_DISPLAY_CPUINFO */
+
+#ifdef CONFIG_AM33XX
+int am335x_get_efuse_mpu_max_freq(struct ctrl_dev *cdev)
+{
+       int sil_rev;
+
+       sil_rev = readl(&cdev->deviceid) >> 28;
+
+       if (sil_rev == 1)
+               /* PG 2.0, efuse may not be set. */
+               return MPUPLL_M_800;
+       else if (sil_rev >= 2) {
+               /* Check what the efuse says our max speed is. */
+               int efuse_arm_mpu_max_freq;
+               efuse_arm_mpu_max_freq = readl(&cdev->efuse_sma);
+               switch ((efuse_arm_mpu_max_freq & DEVICE_ID_MASK)) {
+               case AM335X_ZCZ_1000:
+                       return MPUPLL_M_1000;
+               case AM335X_ZCZ_800:
+                       return MPUPLL_M_800;
+               case AM335X_ZCZ_720:
+                       return MPUPLL_M_720;
+               case AM335X_ZCZ_600:
+               case AM335X_ZCE_600:
+                       return MPUPLL_M_600;
+               case AM335X_ZCZ_300:
+               case AM335X_ZCE_300:
+                       return MPUPLL_M_300;
+               }
+       }
+
+       /* PG 1.0 or otherwise unknown, use the PG1.0 max */
+       return MPUPLL_M_720;
+}
+
+int am335x_get_tps65910_mpu_vdd(int sil_rev, int frequency)
+{
+       /* For PG2.1 and later, we have one set of values. */
+       if (sil_rev >= 2) {
+               switch (frequency) {
+               case MPUPLL_M_1000:
+                       return TPS65910_OP_REG_SEL_1_3_2_5;
+               case MPUPLL_M_800:
+                       return TPS65910_OP_REG_SEL_1_2_6;
+               case MPUPLL_M_720:
+                       return TPS65910_OP_REG_SEL_1_2_0;
+               case MPUPLL_M_600:
+               case MPUPLL_M_300:
+                       return TPS65910_OP_REG_SEL_1_1_3;
+               }
+       }
+
+       /* Default to PG1.0/PG2.0 values. */
+       return TPS65910_OP_REG_SEL_1_1_3;
+}
+#endif