[U-Boot] [PATCH V2 1/3] mx31: define pins and init for UART2 and CSPI3

Helmut Raiger
2011-10-14T08:05:48Z

Signed-off-by: Helmut Raiger <helmut.raiger@hale.at>
---
V2: no changes since V1

arch/arm/cpu/arm1136/mx31/devices.c | 14 ++++++++++++++
arch/arm/include/asm/arch-mx31/clock.h | 1 +
arch/arm/include/asm/arch-mx31/imx-regs.h | 16 ++++++++++++++++
3 files changed, 31 insertions(+), 0 deletions(-)

diff --git a/arch/arm/cpu/arm1136/mx31/devices.c b/arch/arm/cpu/arm1136/mx31/devices.c
index 1e7d48f..ace48f4 100644
--- a/arch/arm/cpu/arm1136/mx31/devices.c
+++ b/arch/arm/cpu/arm1136/mx31/devices.c
@@ -38,7 +38,21 @@ void mx31_uart1_hw_init(void)
}
#endif

+#ifdef CONFIG_SYS_MX31_UART2
+void mx31_uart2_hw_init(void)
+{
+ /* setup pins for UART2 */
+ mx31_gpio_mux(MUX_RXD2__UART2_RXD_MUX);
+ mx31_gpio_mux(MUX_TXD2__UART2_TXD_MUX);
+ mx31_gpio_mux(MUX_RTS2__UART2_RTS_B);
+ mx31_gpio_mux(MUX_CTS2__UART2_CTS_B);
+}
+#endif
+
#ifdef CONFIG_MXC_SPI
+/* note: putting several spi setups here makes no sense as they may differ
+ * at board level (physical pin SS0 of CSPI2 may aswell be used as SS0 of CSPI3)
+ */
void mx31_spi2_hw_init(void)
{
/* SPI2 */
diff --git a/arch/arm/include/asm/arch-mx31/clock.h b/arch/arm/include/asm/arch-mx31/clock.h
index cc99a75..0270d96 100644
--- a/arch/arm/include/asm/arch-mx31/clock.h
+++ b/arch/arm/include/asm/arch-mx31/clock.h
@@ -38,6 +38,7 @@ extern void mx31_gpio_mux(unsigned long mode);
extern void mx31_set_pad(enum iomux_pins pin, u32 config);

void mx31_uart1_hw_init(void);
+void mx31_uart2_hw_init(void);
void mx31_spi2_hw_init(void);
void mxc_hw_watchdog_enable(void);
void mxc_hw_watchdog_reset(void);
diff --git a/arch/arm/include/asm/arch-mx31/imx-regs.h b/arch/arm/include/asm/arch-mx31/imx-regs.h
index fa06ae9..40abc34 100644
--- a/arch/arm/include/asm/arch-mx31/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx31/imx-regs.h
@@ -628,12 +628,23 @@ struct mx31_weim {

/* Register offsets based on IOMUXC_BASE */
/* 0x00 .. 0x7b */
+#define MUX_CTL_CSPI3_MISO 0x0c
+#define MUX_CTL_CSPI3_SCLK 0x0d
+#define MUX_CTL_CSPI3_SPI_RDY 0x0e
+#define MUX_CTL_CSPI3_MOSI 0x13
+
#define MUX_CTL_USBH2_DATA1 0x40
#define MUX_CTL_USBH2_DIR 0x44
#define MUX_CTL_USBH2_STP 0x45
#define MUX_CTL_USBH2_NXT 0x46
#define MUX_CTL_USBH2_DATA0 0x47
#define MUX_CTL_USBH2_CLK 0x4B
+
+#define MUX_CTL_TXD2 0x70
+#define MUX_CTL_RTS2 0x71
+#define MUX_CTL_CTS2 0x72
+#define MUX_CTL_RXD2 0x77
+
#define MUX_CTL_RTS1 0x7c
#define MUX_CTL_CTS1 0x7d
#define MUX_CTL_DTR_DCE1 0x7e
@@ -691,6 +702,11 @@ struct mx31_weim {
#define MUX_RTS1__UART1_RTS_B IOMUX_MODE(MUX_CTL_RTS1, MUX_CTL_FUNC)
#define MUX_CTS1__UART1_CTS_B IOMUX_MODE(MUX_CTL_CTS1, MUX_CTL_FUNC)

+#define MUX_RXD2__UART2_RXD_MUX IOMUX_MODE(MUX_CTL_RXD2, MUX_CTL_FUNC)
+#define MUX_TXD2__UART2_TXD_MUX IOMUX_MODE(MUX_CTL_TXD2, MUX_CTL_FUNC)
+#define MUX_RTS2__UART2_RTS_B IOMUX_MODE(MUX_CTL_RTS2, MUX_CTL_FUNC)
+#define MUX_CTS2__UART2_CTS_B IOMUX_MODE(MUX_CTL_CTS2, MUX_CTL_FUNC)
+
#define MUX_CSPI2_SS0__CSPI2_SS0_B IOMUX_MODE(MUX_CTL_CSPI2_SS0, MUX_CTL_FUNC)
#define MUX_CSPI2_SS1__CSPI2_SS1_B IOMUX_MODE(MUX_CTL_CSPI2_SS1, MUX_CTL_FUNC)
#define MUX_CSPI2_SS2__CSPI2_SS2_B IOMUX_MODE(MUX_CTL_CSPI2_SS2, MUX_CTL_FUNC)
--
1.7.4.4

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