diff options
| author | Biwen Li <biwen.li@nxp.com> | 2020-05-01 20:04:01 +0800 |
|---|---|---|
| committer | Priyanka Jain <priyanka.jain@nxp.com> | 2020-05-04 09:12:36 +0530 |
| commit | 74014dfcd8d990225c9ce2943a41c08896d0e7a6 (patch) | |
| tree | df6779051301805f1e836e379b862dc71d5589a6 /board/freescale | |
| parent | d864f717bbf1b3e5917cedbd07a0cd5d686578f8 (diff) | |
dm: powerpc: P1020: add i2c DM support
This supports i2c DM for SoC P1020
Signed-off-by: Biwen Li <biwen.li@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
Diffstat (limited to 'board/freescale')
| -rw-r--r-- | board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c b/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c index 71fca8ca1e..f668d7efb1 100644 --- a/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c +++ b/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2010-2011, 2013 Freescale Semiconductor, Inc. + * Copyright 2020 NXP */ #include <common.h> @@ -227,6 +228,7 @@ int checkboard(void) struct cpld_data *cpld_data = (void *)(CONFIG_SYS_CPLD_BASE); ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); u8 in, out, io_config, val; + int bus_num = CONFIG_SYS_SPD_BUS_NUM; printf("Board: %s CPLD: V%d.%d PCBA: V%d.0\n", CONFIG_BOARDNAME, in_8(&cpld_data->cpld_rev_major) & 0x0F, @@ -234,7 +236,26 @@ int checkboard(void) in_8(&cpld_data->pcba_rev) & 0x0F); /* Initialize i2c early for rom_loc and flash bank information */ - i2c_set_bus_num(CONFIG_SYS_SPD_BUS_NUM); + #if defined(CONFIG_DM_I2C) + struct udevice *dev; + int ret; + + ret = i2c_get_chip_for_busnum(bus_num, CONFIG_SYS_I2C_PCA9557_ADDR, + 1, &dev); + if (ret) { + printf("%s: Cannot find udev for a bus %d\n", __func__, + bus_num); + return -ENXIO; + } + + if (dm_i2c_read(dev, 0, &in, 1) < 0 || + dm_i2c_read(dev, 1, &out, 1) < 0 || + dm_i2c_read(dev, 3, &io_config, 1) < 0) { + printf("Error reading i2c boot information!\n"); + return 0; /* Don't want to hang() on this error */ + } + #else /* Non DM I2C support - will be removed */ + i2c_set_bus_num(bus_num); if (i2c_read(CONFIG_SYS_I2C_PCA9557_ADDR, 0, 1, &in, 1) < 0 || i2c_read(CONFIG_SYS_I2C_PCA9557_ADDR, 1, 1, &out, 1) < 0 || @@ -242,6 +263,7 @@ int checkboard(void) printf("Error reading i2c boot information!\n"); return 0; /* Don't want to hang() on this error */ } + #endif val = (in & io_config) | (out & (~io_config)); |