[U-Boot] [PATCH V2 6/6] Add SPI support to mx51evk board
Stefano Babic
sbabic at denx.de
Mon Apr 19 09:57:00 CEST 2010
The patch adds SPI devices to the mx51evk board.
The MC13892 chip (PMIC) is supported.
Signed-off-by: Stefano Babic <sbabic at denx.de>
---
Version 2 of the patch is rearranged due to changes in the
mxc_spi driver. Other changes:
Comments by Tom Rix:
- Atmel SPI flash is not supported - removed
- Removed unneded define inside C file
- Replaced all hard-coded values with an or-ing
of bit
board/freescale/mx51evk/mx51evk.c | 139 +++++++++++++++++++++++++++++++++++++
include/configs/mx51evk.h | 15 ++++
2 files changed, 154 insertions(+), 0 deletions(-)
diff --git a/board/freescale/mx51evk/mx51evk.c b/board/freescale/mx51evk/mx51evk.c
index f0b7abc..e9f01f6 100644
--- a/board/freescale/mx51evk/mx51evk.c
+++ b/board/freescale/mx51evk/mx51evk.c
@@ -27,9 +27,12 @@
#include <asm/arch/iomux.h>
#include <asm/errno.h>
#include <asm/arch/sys_proto.h>
+#include <asm/arch/crm_regs.h>
#include <i2c.h>
#include <mmc.h>
#include <fsl_esdhc.h>
+#include <fsl_pmic.h>
+#include <mc13892.h>
#include "mx51evk.h"
DECLARE_GLOBAL_DATA_PTR;
@@ -147,6 +150,130 @@ static void setup_iomux_fec(void)
mxc_iomux_set_pad(MX51_PIN_NANDF_D11, 0x2180);
}
+#ifdef CONFIG_MXC_SPI
+static void setup_iomux_spi(void)
+{
+ /* 000: Select mux mode: ALT0 mux port: MOSI of instance: ecspi1 */
+ mxc_request_iomux(MX51_PIN_CSPI1_MOSI, IOMUX_CONFIG_ALT0);
+ mxc_iomux_set_pad(MX51_PIN_CSPI1_MOSI, 0x105);
+
+ /* 000: Select mux mode: ALT0 mux port: MISO of instance: ecspi1. */
+ mxc_request_iomux(MX51_PIN_CSPI1_MISO, IOMUX_CONFIG_ALT0);
+ mxc_iomux_set_pad(MX51_PIN_CSPI1_MISO, 0x105);
+
+ /* de-select SS1 of instance: ecspi1. */
+ mxc_request_iomux(MX51_PIN_CSPI1_SS1, IOMUX_CONFIG_ALT3);
+ mxc_iomux_set_pad(MX51_PIN_CSPI1_SS1, 0x85);
+
+ /* 000: Select mux mode: ALT0 mux port: SS0 ecspi1 */
+ mxc_request_iomux(MX51_PIN_CSPI1_SS0, IOMUX_CONFIG_ALT0);
+ mxc_iomux_set_pad(MX51_PIN_CSPI1_SS0, 0x185);
+
+ /* 000: Select mux mode: ALT0 mux port: RDY of instance: ecspi1. */
+ mxc_request_iomux(MX51_PIN_CSPI1_RDY, IOMUX_CONFIG_ALT0);
+ mxc_iomux_set_pad(MX51_PIN_CSPI1_RDY, 0x180);
+
+ /* 000: Select mux mode: ALT0 mux port: SCLK of instance: ecspi1. */
+ mxc_request_iomux(MX51_PIN_CSPI1_SCLK, IOMUX_CONFIG_ALT0);
+ mxc_iomux_set_pad(MX51_PIN_CSPI1_SCLK, 0x105);
+}
+#endif
+
+static void power_init(void)
+{
+ unsigned int val;
+ unsigned int reg;
+ struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)MXC_CCM_BASE;
+
+ /* Write needed to Power Gate 2 register */
+ val = pmic_reg_read(REG_POWER_MISC);
+ val &= ~PWGT2SPIEN;
+ pmic_reg_write(REG_POWER_MISC, val);
+
+ /* Write needed to update Charger 0 */
+ pmic_reg_write(REG_CHARGE, VCHRG0 | VCHRG1 | VCHRG2 |
+ ICHRG0 | ICHRG1 | ICHRG2 | ICHRG3 | ICHRGTR0 |
+ OVCTRL1 | UCHEN | CHRGLEDEN | CYCLB);
+
+ /* power up the system first */
+ pmic_reg_write(REG_POWER_MISC, PWUP);
+
+ /* Set core voltage to 1.1V */
+ val = pmic_reg_read(REG_SW_0);
+ val = (val & (~0x1F)) | 0x14;
+ pmic_reg_write(REG_SW_0, val);
+
+ /* Setup VCC (SW2) to 1.25 */
+ val = pmic_reg_read(REG_SW_1);
+ val = (val & (~0x1F)) | 0x1A;
+ pmic_reg_write(REG_SW_1, val);
+
+ /* Setup 1V2_DIG1 (SW3) to 1.25 */
+ val = pmic_reg_read(REG_SW_2);
+ val = (val & (~0x1F)) | 0x1A;
+ pmic_reg_write(REG_SW_2, val);
+ udelay(50);
+
+ /* Raise the core frequency to 800MHz */
+ writel(0x0, &mxc_ccm->cacrr);
+
+ /* Set switchers in Auto in NORMAL mode & STANDBY mode */
+ /* Setup the switcher mode for SW1 & SW2*/
+ val = pmic_reg_read(REG_SW_4);
+ val = (val & ~((SWMODE_MASK << SWMODE1_SHIFT) |
+ (SWMODE_MASK << SWMODE2_SHIFT)));
+ val |= (SWMODE_AUTO_AUTO << SWMODE1_SHIFT) |
+ (SWMODE_AUTO_AUTO << SWMODE2_SHIFT);
+ pmic_reg_write(REG_SW_4, val);
+
+ /* Setup the switcher mode for SW3 & SW4 */
+ val = pmic_reg_read(REG_SW_5);
+ val = (val & ~((SWMODE_MASK << SWMODE3_SHIFT) |
+ (SWMODE_MASK << SWMODE4_SHIFT)));
+ val |= (SWMODE_AUTO_AUTO << SWMODE3_SHIFT) |
+ (SWMODE_AUTO_AUTO << SWMODE4_SHIFT);
+ pmic_reg_write(REG_SW_5, val);
+
+ /* Set VDIG to 1.65V, VGEN3 to 1.8V, VCAM to 2.6V */
+ val = pmic_reg_read(REG_SETTING_0);
+ val &= ~(VCAM_MASK | VGEN3_MASK | VDIG_MASK);
+ val |= VDIG_1_65 | VGEN3_1_8 | VCAM_2_6;
+ pmic_reg_write(REG_SETTING_0, val);
+
+ /* Set VVIDEO to 2.775V, VAUDIO to 3V, VSD to 3.15V */
+ val = pmic_reg_read(REG_SETTING_1);
+ val &= ~(VVIDEO_MASK | VSD_MASK | VAUDIO_MASK);
+ val |= VSD_3_15 | VAUDIO_3_0 | VVIDEO_2_775;
+ pmic_reg_write(REG_SETTING_1, val);
+
+ /* Configure VGEN3 and VCAM regulators to use external PNP */
+ val = VGEN3CONFIG | VCAMCONFIG;
+ pmic_reg_write(REG_MODE_1, val);
+ udelay(200);
+
+ reg = readl(GPIO2_BASE_ADDR + 0x0);
+ reg &= ~0x4000; /* Lower reset line */
+ writel(reg, GPIO2_BASE_ADDR + 0x0);
+
+ reg = readl(GPIO2_BASE_ADDR + 0x4);
+ reg |= 0x4000; /* configure GPIO lines as output */
+ writel(reg, GPIO2_BASE_ADDR + 0x4);
+
+ /* Reset the ethernet controller over GPIO */
+ writel(0x1, IOMUXC_BASE_ADDR + 0x0AC);
+
+ /* Enable VGEN3, VCAM, VAUDIO, VVIDEO, VSD regulators */
+ val = VGEN3EN | VGEN3CONFIG | VCAMEN | VCAMCONFIG |
+ VVIDEOEN | VAUDIOEN | VSDEN;
+ pmic_reg_write(REG_MODE_1, val);
+
+ udelay(500);
+
+ reg = readl(GPIO2_BASE_ADDR + 0x0);
+ reg |= 0x4000;
+ writel(reg, GPIO2_BASE_ADDR + 0x0);
+}
+
#ifdef CONFIG_FSL_ESDHC
int board_mmc_getcd(u8 *cd, struct mmc *mmc)
{
@@ -284,9 +411,21 @@ int board_init(void)
setup_iomux_uart();
setup_iomux_fec();
+
return 0;
}
+#ifdef BOARD_LATE_INIT
+int board_late_init(void)
+{
+#ifdef CONFIG_MXC_SPI
+ setup_iomux_spi();
+ power_init();
+#endif
+ return 0;
+}
+#endif
+
int checkboard(void)
{
puts("Board: MX51EVK ");
diff --git a/include/configs/mx51evk.h b/include/configs/mx51evk.h
index 3626df7..86a4731 100644
--- a/include/configs/mx51evk.h
+++ b/include/configs/mx51evk.h
@@ -54,6 +54,8 @@
/* size in bytes reserved for initial data */
#define CONFIG_SYS_GBL_DATA_SIZE 128
+#define BOARD_LATE_INIT
+
/*
* Hardware drivers
*/
@@ -61,6 +63,19 @@
#define CONFIG_SYS_MX51_UART1
/*
+ * SPI Configs
+ * */
+#define CONFIG_CMD_SPI
+
+#define CONFIG_MXC_SPI
+
+#define CONFIG_FSL_PMIC
+#define CONFIG_FSL_PMIC_BUS 0
+#define CONFIG_FSL_PMIC_CS 0
+#define CONFIG_FSL_PMIC_CLK 2500000
+#define CONFIG_FSL_PMIC_MODE (SPI_CPOL | SPI_CS_HIGH)
+
+/*
* MMC Configs
* */
#define CONFIG_FSL_ESDHC
--
1.6.3.3
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