davinci: da8xx/omapl1: add support for the second sysconfig module

OMAP-L138 adds a second SYSCFG region having useful functionality
like deep sleep, pull up/down control and SATA clock stop.

This patch makes provision for accessing registers from second
SYSCFG region in da8xx code.

Note that OMAP-L137 has a single SYSCFG region.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

6 files changed, 28 insertions, 19 deletions

diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c
index 31dc9901e556..dc19870b23cd 100644
--- a/arch/arm/mach-davinci/board-da830-evm.c
+++ b/arch/arm/mach-davinci/board-da830-evm.c
@@ -112,7 +112,7 @@ static __init void da830_evm_usb_init(void)
          * Set up USB clock/mode in the CFGCHIP2 register.
          * FYI:  CFGCHIP2 is 0x0000ef00 initially.
          */
-        cfgchip2 = __raw_readl(DA8XX_SYSCFG_VIRT(DA8XX_CFGCHIP2_REG));
+        cfgchip2 = __raw_readl(DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
 
         /* USB2.0 PHY reference clock is 24 MHz */
         cfgchip2 &= ~CFGCHIP2_REFFREQ;
@@ -139,7 +139,7 @@ static __init void da830_evm_usb_init(void)
         cfgchip2 |=  CFGCHIP2_SESENDEN | CFGCHIP2_VBDTCTEN;
 #endif
 
-        __raw_writel(cfgchip2, DA8XX_SYSCFG_VIRT(DA8XX_CFGCHIP2_REG));
+        __raw_writel(cfgchip2, DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
 
         /* USB_REFCLKIN is not used. */
         ret = davinci_cfg_reg(DA830_USB0_DRVVBUS);
diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index 07de8db14581..dba22419db0a 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -537,7 +537,7 @@ static int __init da850_evm_config_emac(void)
         if (!machine_is_davinci_da850_evm())
                 return 0;
 
-        cfg_chip3_base = DA8XX_SYSCFG_VIRT(DA8XX_CFGCHIP3_REG);
+        cfg_chip3_base = DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG);
 
         val = __raw_readl(cfg_chip3_base);
 
diff --git a/arch/arm/mach-davinci/da830.c b/arch/arm/mach-davinci/da830.c
index b22b5cf04250..54796050a2ff 100644
--- a/arch/arm/mach-davinci/da830.c
+++ b/arch/arm/mach-davinci/da830.c
@@ -1208,13 +1208,13 @@ static struct davinci_soc_info davinci_soc_info_da830 = {
 
 void __init da830_init(void)
 {
-        da8xx_syscfg_base = ioremap(DA8XX_SYSCFG_BASE, SZ_4K);
-        if (WARN(!da8xx_syscfg_base, "Unable to map syscfg module"))
+        da8xx_syscfg0_base = ioremap(DA8XX_SYSCFG0_BASE, SZ_4K);
+        if (WARN(!da8xx_syscfg0_base, "Unable to map syscfg0 module"))
                 return;
 
         davinci_soc_info_da830.jtag_id_base =
-                                        DA8XX_SYSCFG_VIRT(DA8XX_JTAG_ID_REG);
-        davinci_soc_info_da830.pinmux_base = DA8XX_SYSCFG_VIRT(0x120);
+                                        DA8XX_SYSCFG0_VIRT(DA8XX_JTAG_ID_REG);
+        davinci_soc_info_da830.pinmux_base = DA8XX_SYSCFG0_VIRT(0x120);
 
         davinci_common_init(&davinci_soc_info_da830);
 }
diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c
index 717806c6cef9..4f84ab4bb221 100644
--- a/arch/arm/mach-davinci/da850.c
+++ b/arch/arm/mach-davinci/da850.c
@@ -838,12 +838,12 @@ static void da850_set_async3_src(int pllnum)
                 }
        }
 
-        v = __raw_readl(DA8XX_SYSCFG_VIRT(DA8XX_CFGCHIP3_REG));
+        v = __raw_readl(DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG));
         if (pllnum)
                 v |= CFGCHIP3_ASYNC3_CLKSRC;
         else
                 v &= ~CFGCHIP3_ASYNC3_CLKSRC;
-        __raw_writel(v, DA8XX_SYSCFG_VIRT(DA8XX_CFGCHIP3_REG));
+        __raw_writel(v, DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG));
 }
 
 #ifdef CONFIG_CPU_FREQ
@@ -996,9 +996,9 @@ static int da850_set_pll0rate(struct clk *clk, unsigned long index)
         postdiv = opp->postdiv;
 
         /* Unlock writing to PLL registers */
-        v = __raw_readl(DA8XX_SYSCFG_VIRT(DA8XX_CFGCHIP0_REG));
+        v = __raw_readl(DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP0_REG));
         v &= ~CFGCHIP0_PLL_MASTER_LOCK;
-        __raw_writel(v, DA8XX_SYSCFG_VIRT(DA8XX_CFGCHIP0_REG));
+        __raw_writel(v, DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP0_REG));
 
         ret = davinci_set_pllrate(pll, prediv, mult, postdiv);
         if (WARN_ON(ret))
@@ -1053,13 +1053,17 @@ static struct davinci_soc_info davinci_soc_info_da850 = {
 
 void __init da850_init(void)
 {
-        da8xx_syscfg_base = ioremap(DA8XX_SYSCFG_BASE, SZ_4K);
-        if (WARN(!da8xx_syscfg_base, "Unable to map syscfg module"))
+        da8xx_syscfg0_base = ioremap(DA8XX_SYSCFG0_BASE, SZ_4K);
+        if (WARN(!da8xx_syscfg0_base, "Unable to map syscfg0 module"))
+                return;
+
+        da8xx_syscfg1_base = ioremap(DA8XX_SYSCFG1_BASE, SZ_4K);
+        if (WARN(!da8xx_syscfg1_base, "Unable to map syscfg1 module"))
                 return;
 
         davinci_soc_info_da850.jtag_id_base =
-                                        DA8XX_SYSCFG_VIRT(DA8XX_JTAG_ID_REG);
-        davinci_soc_info_da850.pinmux_base = DA8XX_SYSCFG_VIRT(0x120);
+                                        DA8XX_SYSCFG0_VIRT(DA8XX_JTAG_ID_REG);
+        davinci_soc_info_da850.pinmux_base = DA8XX_SYSCFG0_VIRT(0x120);
 
         davinci_common_init(&davinci_soc_info_da850);
 
diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c
index a5105f03fd86..745534eb63c7 100644
--- a/arch/arm/mach-davinci/devices-da8xx.c
+++ b/arch/arm/mach-davinci/devices-da8xx.c
@@ -42,7 +42,8 @@
 #define DA8XX_MDIO_REG_OFFSET           0x4000
 #define DA8XX_EMAC_CTRL_RAM_SIZE        SZ_8K
 
-void __iomem *da8xx_syscfg_base;
+void __iomem *da8xx_syscfg0_base;
+void __iomem *da8xx_syscfg1_base;
 
 static struct plat_serial8250_port da8xx_serial_pdata[] = {
         {
diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h b/arch/arm/mach-davinci/include/mach/da8xx.h
index 90704910d343..bddc4d4a806e 100644
--- a/arch/arm/mach-davinci/include/mach/da8xx.h
+++ b/arch/arm/mach-davinci/include/mach/da8xx.h
@@ -21,7 +21,8 @@
 #include <mach/mmc.h>
 #include <mach/usb.h>
 
-extern void __iomem *da8xx_syscfg_base;
+extern void __iomem *da8xx_syscfg0_base;
+extern void __iomem *da8xx_syscfg1_base;
 
 /*
  * The cp_intc interrupt controller for the da8xx isn't in the same
@@ -34,13 +35,16 @@ extern void __iomem *da8xx_syscfg_base;
 #define DA8XX_CP_INTC_SIZE      SZ_8K
 #define DA8XX_CP_INTC_VIRT      (IO_VIRT - DA8XX_CP_INTC_SIZE - SZ_4K)
 
-#define DA8XX_SYSCFG_BASE       (IO_PHYS + 0x14000)
-#define DA8XX_SYSCFG_VIRT(x)    (da8xx_syscfg_base + (x))
+#define DA8XX_SYSCFG0_BASE      (IO_PHYS + 0x14000)
+#define DA8XX_SYSCFG0_VIRT(x)   (da8xx_syscfg0_base + (x))
 #define DA8XX_JTAG_ID_REG       0x18
 #define DA8XX_CFGCHIP0_REG      0x17c
 #define DA8XX_CFGCHIP2_REG      0x184
 #define DA8XX_CFGCHIP3_REG      0x188
 
+#define DA8XX_SYSCFG1_BASE      (IO_PHYS + 0x22C000)
+#define DA8XX_SYSCFG1_VIRT(x)   (da8xx_syscfg1_base + (x))
+
 #define DA8XX_PSC0_BASE         0x01c10000
 #define DA8XX_PLL0_BASE         0x01c11000
 #define DA8XX_TIMER64P0_BASE    0x01c20000