omap1: omap7xx clocks, mux, serial fixes

This change adds in the necessary clocks and mux pins for UART
control on omap7xx devices.  I also made a change in the serial
code to only try and initialize two UARTs in omap_serial_init, as
these devices don't have three.

Signed-off-by: Cory Maccarrone <darkstar6262@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

4 files changed, 35 insertions, 0 deletions

diff --git a/arch/arm/mach-omap1/clock_data.c b/arch/arm/mach-omap1/clock_data.c
index aa8558adbf1c..9240bc1026a3 100644
--- a/arch/arm/mach-omap1/clock_data.c
+++ b/arch/arm/mach-omap1/clock_data.c
@@ -478,6 +478,24 @@ static struct clk usb_dc_ck7xx = {
         .enable_bit     = 8,
 };
 
+static struct clk uart1_7xx = {
+        .name           = "uart1_ck",
+        .ops            = &clkops_generic,
+        /* Direct from ULPD, no parent */
+        .rate           = 12000000,
+        .enable_reg     = OMAP1_IO_ADDRESS(SOFT_REQ_REG),
+        .enable_bit     = 9,
+};
+
+static struct clk uart2_7xx = {
+        .name           = "uart2_ck",
+        .ops            = &clkops_generic,
+        /* Direct from ULPD, no parent */
+        .rate           = 12000000,
+        .enable_reg     = OMAP1_IO_ADDRESS(SOFT_REQ_REG),
+        .enable_bit     = 11,
+};
+
 static struct clk mclk_1510 = {
         .name           = "mclk",
         .ops            = &clkops_generic,
@@ -620,7 +638,9 @@ static struct omap_clk omap_clks[] = {
         /* ULPD clocks */
         CLK(NULL,       "uart1_ck",     &uart1_1510,    CK_1510 | CK_310),
         CLK(NULL,       "uart1_ck",     &uart1_16xx.clk, CK_16XX),
+        CLK(NULL,       "uart1_ck",     &uart1_7xx,     CK_7XX),
         CLK(NULL,       "uart2_ck",     &uart2_ck,      CK_16XX | CK_1510 | CK_310),
+        CLK(NULL,       "uart2_ck",     &uart2_7xx,     CK_7XX),
         CLK(NULL,       "uart3_ck",     &uart3_1510,    CK_1510 | CK_310),
         CLK(NULL,       "uart3_ck",     &uart3_16xx.clk, CK_16XX),
         CLK(NULL,       "usb_clko",     &usb_clko,      CK_16XX | CK_1510 | CK_310),
diff --git a/arch/arm/mach-omap1/mux.c b/arch/arm/mach-omap1/mux.c
index 84341377232d..6a9b42f4113f 100644
--- a/arch/arm/mach-omap1/mux.c
+++ b/arch/arm/mach-omap1/mux.c
@@ -70,6 +70,10 @@ MUX_CFG_7XX("SPI_7XX_3",           6,   13,    4,   12,   1, 0)
 MUX_CFG_7XX("SPI_7XX_4",           6,   17,    4,   16,   1, 0)
 MUX_CFG_7XX("SPI_7XX_5",           8,   25,    0,   24,   0, 0)
 MUX_CFG_7XX("SPI_7XX_6",           9,    5,    0,    4,   0, 0)
+
+/* UART pins */
+MUX_CFG_7XX("UART_7XX_1",          3,   21,    0,   20,   0, 0)
+MUX_CFG_7XX("UART_7XX_2",          8,    1,    6,    0,   0, 0)
 };
 #define OMAP7XX_PINS_SZ         ARRAY_SIZE(omap7xx_pins)
 #else
diff --git a/arch/arm/mach-omap1/serial.c b/arch/arm/mach-omap1/serial.c
index 349de90194e3..b78d0749f13d 100644
--- a/arch/arm/mach-omap1/serial.c
+++ b/arch/arm/mach-omap1/serial.c
@@ -122,6 +122,13 @@ void __init omap_serial_init(void)
 
         for (i = 0; i < ARRAY_SIZE(serial_platform_data) - 1; i++) {
 
+                /* Don't look at UARTs higher than 2 for omap7xx */
+                if (cpu_is_omap7xx() && i > 1) {
+                        serial_platform_data[i].membase = NULL;
+                        serial_platform_data[i].mapbase = 0;
+                        continue;
+                }
+
                 /* Static mapping, never released */
                 serial_platform_data[i].membase =
                         ioremap(serial_platform_data[i].mapbase, SZ_2K);
diff --git a/arch/arm/plat-omap/include/plat/mux.h b/arch/arm/plat-omap/include/plat/mux.h
index c7472a28ce24..82c374c2f868 100644
--- a/arch/arm/plat-omap/include/plat/mux.h
+++ b/arch/arm/plat-omap/include/plat/mux.h
@@ -191,6 +191,10 @@ enum omap7xx_index {
         SPI_7XX_4,
         SPI_7XX_5,
         SPI_7XX_6,
+
+        /* UART */
+        UART_7XX_1,
+        UART_7XX_2,
 };
 
 enum omap1xxx_index {