diff options
Diffstat (limited to 'board/toradex/apalis_imx6/pf0100.c')
| -rw-r--r-- | board/toradex/apalis_imx6/pf0100.c | 138 |
1 files changed, 125 insertions, 13 deletions
diff --git a/board/toradex/apalis_imx6/pf0100.c b/board/toradex/apalis_imx6/pf0100.c index 5c9d7b0566..5e29ac89f0 100644 --- a/board/toradex/apalis_imx6/pf0100.c +++ b/board/toradex/apalis_imx6/pf0100.c @@ -19,15 +19,19 @@ #include "pf0100_otp.inc" #include "pf0100.h" +/* define for PMIC register dump */ +/*#define DEBUG */ + /* 7-bit I2C bus slave address */ #define PFUZE100_I2C_ADDR (0x08) -iomux_v3_cfg_t const pmic_prog_pads[] = { +static iomux_v3_cfg_t const pmic_prog_pads[] = { MX6_PAD_GPIO_2__GPIO_1_2 | MUX_PAD_CTRL(NO_PAD_CTRL), }; -void pmic_init(void) +unsigned pmic_init(void) { + unsigned programmed = 0; uchar bus = 1; uchar devid, revid, val; @@ -35,27 +39,128 @@ void pmic_init(void) if(!(0 == i2c_set_bus_num(bus) && (0 == i2c_probe(PFUZE100_I2C_ADDR)))) { puts("i2c bus failed\n"); - return; + return 0; } /* get device ident */ if( i2c_read(PFUZE100_I2C_ADDR, PFUZE100_DEVICEID, 1, &devid, 1) < 0) { puts("i2c pmic devid read failed\n"); - return; + return 0; } if( i2c_read(PFUZE100_I2C_ADDR, PFUZE100_REVID, 1, &revid, 1) < 0) { puts("i2c pmic revid read failed\n"); - return; + return 0; } printf("device id: 0x%.2x, revision id: 0x%.2x\n", devid, revid); +#ifdef DEBUG + { + unsigned i,j; + + for(i=0; i<16; i++) + printf("\t%x",i); + for(j=0; j<0x80; ) + { + printf("\n%2x",j); + for(i=0; i<16; i++) + { + i2c_read(PFUZE100_I2C_ADDR, j+i, 1, &val, 1); + printf("\t%2x", val); + } + j += 0x10; + } + printf("\nEXT Page 1"); + + val = PFUZE100_PAGE_REGISTER_PAGE1; + if( i2c_write(PFUZE100_I2C_ADDR, PFUZE100_PAGE_REGISTER, 1, &val, 1)) + { + puts("i2c write failed\n"); + return 0; + } + + for(j=0x80; j<0x100; ) + { + printf("\n%2x",j); + for(i=0; i<16; i++) + { + i2c_read(PFUZE100_I2C_ADDR, j+i, 1, &val, 1); + printf("\t%2x", val); + } + j += 0x10; + } + printf("\nEXT Page 2"); + + val = PFUZE100_PAGE_REGISTER_PAGE2; + if( i2c_write(PFUZE100_I2C_ADDR, PFUZE100_PAGE_REGISTER, 1, &val, 1)) + { + puts("i2c write failed\n"); + return 0; + } + + for(j=0x80; j<0x100; ) + { + printf("\n%2x",j); + for(i=0; i<16; i++) + { + i2c_read(PFUZE100_I2C_ADDR, j+i, 1, &val, 1); + printf("\t%2x", val); + } + j += 0x10; + } + printf("\n"); + } +#endif + /* get device programmed state */ + val = PFUZE100_PAGE_REGISTER_PAGE1; + if( i2c_write(PFUZE100_I2C_ADDR, PFUZE100_PAGE_REGISTER, 1, &val, 1)) + { + puts("i2c write failed\n"); + return 0; + } + if( i2c_read(PFUZE100_I2C_ADDR, PFUZE100_FUSE_POR1, 1, &val, 1) < 0) + { + puts("i2c fuse_por read failed\n"); + return 0; + } + if(val & PFUZE100_FUSE_POR_M) + programmed++; + + if( i2c_read(PFUZE100_I2C_ADDR, PFUZE100_FUSE_POR2, 1, &val, 1) < 0) + { + puts("i2c fuse_por read failed\n"); + return programmed; + } + if(val & PFUZE100_FUSE_POR_M) + programmed++; + + if( i2c_read(PFUZE100_I2C_ADDR, PFUZE100_FUSE_POR3, 1, &val, 1) < 0) + { + puts("i2c fuse_por read failed\n"); + return programmed; + } + if(val & PFUZE100_FUSE_POR_M) + programmed++; + + switch (programmed) { + case 0: + printf("PMIC: not programmed\n"); + break; + case 3: + printf("PMIC: programmed\n"); + break; + default: + printf("PMIC: undefined progamming state\n"); + break; + } + + /* TODO the following should be removed for production */ /* set VGEN1 to 1.2V */ val = PFUZE100_VGEN1_VAL; if( i2c_write(PFUZE100_I2C_ADDR, PFUZE100_VGEN1CTL, 1, &val, 1)) { puts("i2c write failed\n"); - return; + return programmed; } /* set SWBST to 5.0V */ @@ -63,16 +168,20 @@ void pmic_init(void) if( i2c_write(PFUZE100_I2C_ADDR, PFUZE100_SWBSTCTL, 1, &val, 1)) { puts("i2c write failed\n"); - return; } + return programmed; } -void pf0100_prog(void) +int pf0100_prog(void) { unsigned char bus = 1; unsigned char val; unsigned i; + if(pmic_init() == 3) { + puts("PMIC already programmed, exiting\n"); + return 1; + } /* set up gpio to manipulate vprog, initially off */ imx_iomux_v3_setup_multiple_pads(pmic_prog_pads, ARRAY_SIZE(pmic_prog_pads)); gpio_direction_output(IMX_GPIO_NR(1, 2), 0); @@ -80,7 +189,7 @@ void pf0100_prog(void) if(!(0 == i2c_set_bus_num(bus) && (0 == i2c_probe(PFUZE100_I2C_ADDR)))) { puts("i2c bus failed\n"); - return; + return 1; } for (i=0; i<ARRAY_SIZE(pmic_otp_prog); i++) { @@ -92,7 +201,7 @@ void pf0100_prog(void) { printf("i2c write failed, reg 0x%2x, value0x%2x\n", pmic_otp_prog[i].reg, val); - return; + return 1; } break; case pmic_delay: @@ -106,15 +215,18 @@ void pf0100_prog(void) break; } } + return 0; } -static int do_pf0100_prog(cmd_tbl_t *cmdtp, int flag, int argc, +int do_pf0100_prog(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { puts("Programming PMIC OTP..."); - pf0100_prog(); - puts("done. Power cycle the board\n"); + if(!pf0100_prog()) + puts("done.\n"); + else + puts("failed.\n"); return 0; } |