MIPS: ralink: add verbose pmu info

Print the PMU and LDO settings on boot.

Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/7999/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/ralink/mt7620.c b/arch/mips/ralink/mt7620.c
index a3ad56c2372d0fcd261a1ff9dfea333a528f601f..584681709db29227d018822c4958797ef57edffd 100644 (file)
--- a/arch/mips/ralink/mt7620.c
+++ b/arch/mips/ralink/mt7620.c
@@ -20,6 +20,22 @@
 
 #include "common.h"
 
+/* analog */
+#define PMU0_CFG               0x88
+#define PMU_SW_SET             BIT(28)
+#define A_DCDC_EN              BIT(24)
+#define A_SSC_PERI             BIT(19)
+#define A_SSC_GEN              BIT(18)
+#define A_SSC_M                        0x3
+#define A_SSC_S                        16
+#define A_DLY_M                        0x7
+#define A_DLY_S                        8
+#define A_VTUNE_M              0xff
+
+/* digital */
+#define PMU1_CFG               0x8C
+#define DIG_SW_SEL             BIT(25)
+
 /* does the board have sdram or ddram */
 static int dram_type;
 
@@ -339,6 +355,8 @@ void prom_soc_init(struct ralink_soc_info *soc_info)
        u32 n1;
        u32 rev;
        u32 cfg0;
+       u32 pmu0;
+       u32 pmu1;
 
        n0 = __raw_readl(sysc + SYSC_REG_CHIP_NAME0);
        n1 = __raw_readl(sysc + SYSC_REG_CHIP_NAME1);
@@ -386,4 +404,12 @@ void prom_soc_init(struct ralink_soc_info *soc_info)
                BUG();
        }
        soc_info->mem_base = MT7620_DRAM_BASE;
+
+       pmu0 = __raw_readl(sysc + PMU0_CFG);
+       pmu1 = __raw_readl(sysc + PMU1_CFG);
+
+       pr_info("Analog PMU set to %s control\n",
+               (pmu0 & PMU_SW_SET) ? ("sw") : ("hw"));
+       pr_info("Digital PMU set to %s control\n",
+               (pmu1 & DIG_SW_SEL) ? ("sw") : ("hw"));
 }