If configured to use UART{1,2,3,4,5} such as on the Beaglebone RS232
cape or on the am335x_evm daughterboard, enable the proper pin-muxing.
Signed-off-by: Andrew Bradford <and...@bradfordembedded.com>
Tested-by: Matt Porter <mpor...@ti.com>
---
Changes from v1:
Also enable UART3 pin mux
arch/arm/cpu/armv7/am33xx/board.c | 17 ++++++++
arch/arm/include/asm/arch-am33xx/sys_proto.h | 7 +++-
board/ti/am335x/mux.c | 54 ++++++++++++++++++++++++++
3 files changed, 77 insertions(+), 1 deletion(-)
diff --git a/arch/arm/cpu/armv7/am33xx/board.c
b/arch/arm/cpu/armv7/am33xx/board.c
index 978b184..e324265 100644
--- a/arch/arm/cpu/armv7/am33xx/board.c
+++ b/arch/arm/cpu/armv7/am33xx/board.c
@@ -152,7 +152,24 @@ void s_init(void)
/* UART softreset */
u32 regVal;
+#ifdef CONFIG_SERIAL1
enable_uart0_pin_mux();
+#endif /* CONFIG_SERIAL1 */
+#ifdef CONFIG_SERIAL2
+ enable_uart1_pin_mux();
+#endif /* CONFIG_SERIAL2 */
+#ifdef CONFIG_SERIAL3
+ enable_uart2_pin_mux();
+#endif /* CONFIG_SERIAL3 */
+#ifdef CONFIG_SERIAL4
+ enable_uart3_pin_mux();
+#endif /* CONFIG_SERIAL4 */
+#ifdef CONFIG_SERIAL5
+ enable_uart4_pin_mux();
+#endif /* CONFIG_SERIAL5 */
+#ifdef CONFIG_SERIAL6
+ enable_uart5_pin_mux();
+#endif /* CONFIG_SERIAL6 */
regVal = readl(&uart_base->uartsyscfg);
regVal |= UART_RESET;
diff --git a/arch/arm/include/asm/arch-am33xx/sys_proto.h
b/arch/arm/include/asm/arch-am33xx/sys_proto.h
index 819ea65..3ef1ff2 100644
--- a/arch/arm/include/asm/arch-am33xx/sys_proto.h
+++ b/arch/arm/include/asm/arch-am33xx/sys_proto.h
@@ -53,11 +53,16 @@ void ddr_pll_config(unsigned int ddrpll_M);
/*
* We have three pin mux functions that must exist. We must be able to enable
- * uart0, for initial output and i2c0 to read the main EEPROM. We then have a
+ * a uart for initial output and i2c0 to read the main EEPROM. We then have a
* main pinmux function that can be overridden to enable all other pinmux that
* is required on the board.
*/
void enable_uart0_pin_mux(void);
+void enable_uart1_pin_mux(void);
+void enable_uart2_pin_mux(void);
+void enable_uart3_pin_mux(void);
+void enable_uart4_pin_mux(void);
+void enable_uart5_pin_mux(void);
void enable_i2c0_pin_mux(void);
void enable_board_pin_mux(struct am335x_baseboard_id *header);
#endif
diff --git a/board/ti/am335x/mux.c b/board/ti/am335x/mux.c
index 80becd5..82b5852 100644
--- a/board/ti/am335x/mux.c
+++ b/board/ti/am335x/mux.c
@@ -259,6 +259,36 @@ static struct module_pin_mux uart0_pin_mux[] = {
{-1},
};
+static struct module_pin_mux uart1_pin_mux[] = {
+ {OFFSET(uart1_rxd), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* UART1_RXD */
+ {OFFSET(uart1_txd), (MODE(0) | PULLUDEN)}, /* UART1_TXD */
+ {-1},
+};
+
+static struct module_pin_mux uart2_pin_mux[] = {
+ {OFFSET(spi0_sclk), (MODE(1) | PULLUP_EN | RXACTIVE)}, /* UART2_RXD */
+ {OFFSET(spi0_d0), (MODE(1) | PULLUDEN)}, /* UART2_TXD */
+ {-1},
+};
+
+static struct module_pin_mux uart3_pin_mux[] = {
+ {OFFSET(spi0_cs1), (MODE(1) | PULLUP_EN | RXACTIVE)}, /* UART3_RXD */
+ {OFFSET(ecap0_in_pwm0_out), (MODE(1) | PULLUDEN)}, /* UART3_TXD */
+ {-1},
+};
+
+static struct module_pin_mux uart4_pin_mux[] = {
+ {OFFSET(gpmc_wait0), (MODE(6) | PULLUP_EN | RXACTIVE)}, /* UART4_RXD */
+ {OFFSET(gpmc_wpn), (MODE(6) | PULLUDEN)}, /* UART4_TXD */
+ {-1},
+};
+
+static struct module_pin_mux uart5_pin_mux[] = {
+ {OFFSET(lcd_data9), (MODE(4) | PULLUP_EN | RXACTIVE)}, /* UART5_RXD */
+ {OFFSET(lcd_data8), (MODE(4) | PULLUDEN)}, /* UART5_TXD */
+ {-1},
+};
+
static struct module_pin_mux mmc0_pin_mux[] = {
{OFFSET(mmc0_dat3), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT3 */
{OFFSET(mmc0_dat2), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT2 */
@@ -381,6 +411,30 @@ void enable_uart0_pin_mux(void)
configure_module_pin_mux(uart0_pin_mux);
}
+void enable_uart1_pin_mux(void)
+{
+ configure_module_pin_mux(uart1_pin_mux);
+}
+
+void enable_uart2_pin_mux(void)
+{
+ configure_module_pin_mux(uart2_pin_mux);
+}
+
+void enable_uart3_pin_mux(void)
+{
+ configure_module_pin_mux(uart3_pin_mux);
+}
+
+void enable_uart4_pin_mux(void)
+{
+ configure_module_pin_mux(uart4_pin_mux);
+}
+
+void enable_uart5_pin_mux(void)
+{
+ configure_module_pin_mux(uart5_pin_mux);
+}
void enable_i2c0_pin_mux(void)
{
--
1.7.10.4
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