diff options
| author | Yao Yuan <yao.yuan@freescale.com> | 2015-03-03 16:35:18 +0800 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2015-04-21 10:19:19 -0700 |
| commit | 09227dd9df9b033be0a92bb5fa4319b22a9e6ba7 (patch) | |
| tree | 98c34cc93a66a0b1e7e78cfc4603e29a47270f5d /board/freescale | |
| parent | 036f3f3379d56a4eb64d5154b47a8981a478fe3e (diff) | |
ls1021atwr: add hwconfig setting to do pin mux
Freescale LS1021ATWR share some pins. Hwconfig option is used to
allows users to choose the pin functions.
Signed-off-by: Yuan Yao <yao.yuan@freescale.com>
[York Sun: revised commit message]
Reviewed-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'board/freescale')
| -rw-r--r-- | board/freescale/ls1021atwr/ls1021atwr.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/board/freescale/ls1021atwr/ls1021atwr.c b/board/freescale/ls1021atwr/ls1021atwr.c index a9c87f2a22..8633ec08dd 100644 --- a/board/freescale/ls1021atwr/ls1021atwr.c +++ b/board/freescale/ls1021atwr/ls1021atwr.c @@ -13,6 +13,7 @@ #include <asm/arch/fsl_serdes.h> #include <asm/arch/ls102xa_stream_id.h> #include <asm/pcie_layerscape.h> +#include <hwconfig.h> #include <mmc.h> #include <fsl_esdhc.h> #include <fsl_ifc.h> @@ -54,6 +55,17 @@ DECLARE_GLOBAL_DATA_PTR; #define KEEP_STATUS 0x0 #define NEED_RESET 0x1 +#define SOFT_MUX_ON_I2C3_IFC 0x2 +#define SOFT_MUX_ON_CAN3_USB2 0x8 +#define SOFT_MUX_ON_QE_LCD 0x10 + +#define PIN_I2C3_IFC_MUX_I2C3 0x0 +#define PIN_I2C3_IFC_MUX_IFC 0x1 +#define PIN_CAN3_USB2_MUX_USB2 0x0 +#define PIN_CAN3_USB2_MUX_CAN3 0x1 +#define PIN_QE_LCD_MUX_LCD 0x0 +#define PIN_QE_LCD_MUX_QE 0x1 + struct cpld_data { u8 cpld_ver; /* cpld revision */ u8 cpld_ver_sub; /* cpld sub revision */ @@ -271,6 +283,68 @@ int config_serdes_mux(void) } #endif +#ifndef CONFIG_QSPI_BOOT +int config_board_mux(void) +{ + struct cpld_data *cpld_data = (void *)(CONFIG_SYS_CPLD_BASE); + int conflict_flag; + + conflict_flag = 0; + if (hwconfig("i2c3")) { + conflict_flag++; + cpld_data->soft_mux_on |= SOFT_MUX_ON_I2C3_IFC; + cpld_data->i2c3_ifc_mux = PIN_I2C3_IFC_MUX_I2C3; + } + + if (hwconfig("ifc")) { + conflict_flag++; + /* some signals can not enable simultaneous*/ + if (conflict_flag > 1) + goto conflict; + cpld_data->soft_mux_on |= SOFT_MUX_ON_I2C3_IFC; + cpld_data->i2c3_ifc_mux = PIN_I2C3_IFC_MUX_IFC; + } + + conflict_flag = 0; + if (hwconfig("usb2")) { + conflict_flag++; + cpld_data->soft_mux_on |= SOFT_MUX_ON_CAN3_USB2; + cpld_data->can3_usb2_mux = PIN_CAN3_USB2_MUX_USB2; + } + + if (hwconfig("can3")) { + conflict_flag++; + /* some signals can not enable simultaneous*/ + if (conflict_flag > 1) + goto conflict; + cpld_data->soft_mux_on |= SOFT_MUX_ON_CAN3_USB2; + cpld_data->can3_usb2_mux = PIN_CAN3_USB2_MUX_CAN3; + } + + conflict_flag = 0; + if (hwconfig("lcd")) { + conflict_flag++; + cpld_data->soft_mux_on |= SOFT_MUX_ON_QE_LCD; + cpld_data->qe_lcd_mux = PIN_QE_LCD_MUX_LCD; + } + + if (hwconfig("qe")) { + conflict_flag++; + /* some signals can not enable simultaneous*/ + if (conflict_flag > 1) + goto conflict; + cpld_data->soft_mux_on |= SOFT_MUX_ON_QE_LCD; + cpld_data->qe_lcd_mux = PIN_QE_LCD_MUX_QE; + } + + return 0; + +conflict: + printf("WARNING: pin conflict! MUX setting may failed!\n"); + return 0; +} +#endif + int board_early_init_f(void) { struct ccsr_scfg *scfg = (struct ccsr_scfg *)CONFIG_SYS_FSL_SCFG_ADDR; @@ -480,6 +554,10 @@ int board_init(void) #if defined(CONFIG_MISC_INIT_R) int misc_init_r(void) { +#ifndef CONFIG_QSPI_BOOT + config_board_mux(); +#endif + #ifdef CONFIG_FSL_CAAM return sec_init(); #endif |