Commit 3f66148f3dc4ed3966e211e59bd864b955389706
1 parent
0ae8c2c4f0
Exists in
smarc-imx-l5.0.0_1.0.0-ga
MLK-9705 imx: mx6sxsabreauto: add MAX7310 support to reset peripherals
The MAX7310 uses I2C3 bus. At system initialization, enable the driver to: 1. Reset CPU_PER_RST_B signal 2. Set the steering for ENET 3. Enable the LVDS display Signed-off-by: Ye.Li <B37916@freescale.com>
Showing 2 changed files with 46 additions and 0 deletions Side-by-side Diff
board/freescale/mx6sxsabreauto/mx6sxsabreauto.c
| ... | ... | @@ -34,6 +34,10 @@ |
| 34 | 34 | #include <mxsfb.h> |
| 35 | 35 | #endif |
| 36 | 36 | |
| 37 | +#ifdef CONFIG_MAX7310_IOEXP | |
| 38 | +#include <gpio_exp.h> | |
| 39 | +#endif | |
| 40 | + | |
| 37 | 41 | #ifdef CONFIG_FASTBOOT |
| 38 | 42 | #include <fastboot.h> |
| 39 | 43 | #ifdef CONFIG_ANDROID_RECOVERY |
| ... | ... | @@ -200,6 +204,26 @@ |
| 200 | 204 | } |
| 201 | 205 | #endif |
| 202 | 206 | |
| 207 | +#ifdef CONFIG_MAX7310_IOEXP | |
| 208 | + | |
| 209 | +#define CPU_PER_RST_B IOEXP_GPIO_NR(1, 4) | |
| 210 | +#define LVDS_EN_PIN IOEXP_GPIO_NR(1, 7) | |
| 211 | +#define STEER_ENET IOEXP_GPIO_NR(2, 2) | |
| 212 | + | |
| 213 | +int setup_max7310(void) | |
| 214 | +{ | |
| 215 | + /* Must call this function after i2c has setup */ | |
| 216 | +#ifdef CONFIG_SYS_I2C_MXC | |
| 217 | + gpio_exp_setup_port(1, 2, 0x30); | |
| 218 | + gpio_exp_setup_port(2, 2, 0x32); | |
| 219 | + | |
| 220 | + return 0; | |
| 221 | +#else | |
| 222 | + return -EPERM; | |
| 223 | +#endif | |
| 224 | +} | |
| 225 | +#endif | |
| 226 | + | |
| 203 | 227 | static void setup_iomux_uart(void) |
| 204 | 228 | { |
| 205 | 229 | imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads)); |
| ... | ... | @@ -466,6 +490,11 @@ |
| 466 | 490 | imx_iomux_v3_setup_multiple_pads(lvds_ctrl_pads, |
| 467 | 491 | ARRAY_SIZE(lvds_ctrl_pads)); |
| 468 | 492 | |
| 493 | +#ifdef CONFIG_MAX7310_IOEXP | |
| 494 | + /* LVDS Enable pin */ | |
| 495 | + gpio_exp_direction_output(LVDS_EN_PIN , 1); | |
| 496 | +#endif | |
| 497 | + | |
| 469 | 498 | /* Set Brightness to high */ |
| 470 | 499 | gpio_direction_output(IMX_GPIO_NR(6, 3) , 1); |
| 471 | 500 | } |
| ... | ... | @@ -803,6 +832,18 @@ |
| 803 | 832 | #ifdef CONFIG_SYS_I2C_MXC |
| 804 | 833 | setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2); |
| 805 | 834 | setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info3); |
| 835 | +#endif | |
| 836 | + | |
| 837 | +#ifdef CONFIG_MAX7310_IOEXP | |
| 838 | + setup_max7310(); | |
| 839 | + | |
| 840 | + /* Reset CPU_PER_RST_B signal for enet phy and PCIE */ | |
| 841 | + gpio_exp_direction_output(CPU_PER_RST_B, 0); | |
| 842 | + udelay(500); | |
| 843 | + gpio_exp_direction_output(CPU_PER_RST_B, 1); | |
| 844 | + | |
| 845 | + /* Set steering signal to L for selecting B0 */ | |
| 846 | + gpio_exp_direction_output(STEER_ENET, 0); | |
| 806 | 847 | #endif |
| 807 | 848 | |
| 808 | 849 | #ifdef CONFIG_FEC_MXC |
include/configs/mx6sxsabreauto.h