From: Cory Maccarrone <darkstar6...@gmail.com>
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 <darkstar6...@gmail.com>
Signed-off-by: Tony Lindgren <t...@atomide.com>
---
arch/arm/mach-omap1/clock_data.c | 20 ++++++++++++++++++++
arch/arm/mach-omap1/mux.c | 4 ++++
arch/arm/mach-omap1/serial.c | 7 +++++++
arch/arm/plat-omap/include/plat/mux.h | 4 ++++
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 ca4bd86..af54114 100644
--- a/arch/arm/mach-omap1/clock_data.c
+++ b/arch/arm/mach-omap1/clock_data.c
@@ -551,6 +551,24 @@ static struct clk usb_dc_ck7xx = {
.enable_bit = SOFT_USB_OTG_DPLL_REQ_SHIFT,
};
+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,
@@ -697,7 +715,9 @@ 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 3e98835..7835add 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 349de90..b78d074 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 e1da7b1..aeba717 100644
--- a/arch/arm/plat-omap/include/plat/mux.h
+++ b/arch/arm/plat-omap/include/plat/mux.h
@@ -173,6 +173,10 @@ enum omap7xx_index {
SPI_7XX_4,
SPI_7XX_5,
SPI_7XX_6,
+
+ /* UART */
+ UART_7XX_1,
+ UART_7XX_2,
};
enum omap1xxx_index {
--
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