openwrtv3/target/linux/ramips/patches-3.10/0102-MIPS-ralink-add-verbose-pmu-info.patch

From 74339d6eab7a37f7c629b737bf686d30e5014ce2 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Mon, 20 May 2013 20:57:09 +0200
Subject: [PATCH 06/33] MIPS: ralink: add verbose pmu info

Print the PMU and LDO settings on boot.

Signed-off-by: John Crispin <blogic@openwrt.org>
---
 arch/mips/ralink/mt7620.c |   26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

--- a/arch/mips/ralink/mt7620.c
+++ b/arch/mips/ralink/mt7620.c
@@ -26,6 +26,22 @@
 #define CLKCFG_FFRAC_MASK	0x001f
 #define CLKCFG_FFRAC_USB_VAL	0x0003
 
+/* 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;
 
@@ -208,6 +224,8 @@ void prom_soc_init(struct ralink_soc_inf
 	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);
@@ -255,4 +273,12 @@ void prom_soc_init(struct ralink_soc_inf
 		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"));
 }