diff options
| author | Biwen Li <biwen.li@nxp.com> | 2019-12-31 15:33:44 +0800 |
|---|---|---|
| committer | Priyanka Jain <priyanka.jain@nxp.com> | 2020-02-04 16:20:25 +0530 |
| commit | 9ebde8849a37beff5eccb462a991e05b07f8a360 (patch) | |
| tree | 037e178c5c495f7e72c83c873dee5b857b7cfa0e /board/freescale/ls1021aqds/ls1021aqds.c | |
| parent | a0affb367ad638e1e6f51ed3678d3daad5724a40 (diff) | |
dm: arm: ls1021a: add i2c DM support
This supports i2c DM and enables CONFIG_DM_I2C
for SoC LS1021A
Signed-off-by: Biwen Li <biwen.li@nxp.com>
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
Diffstat (limited to 'board/freescale/ls1021aqds/ls1021aqds.c')
| -rw-r--r-- | board/freescale/ls1021aqds/ls1021aqds.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/board/freescale/ls1021aqds/ls1021aqds.c b/board/freescale/ls1021aqds/ls1021aqds.c index b7f8f1d578..1ae822e510 100644 --- a/board/freescale/ls1021aqds/ls1021aqds.c +++ b/board/freescale/ls1021aqds/ls1021aqds.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2014 Freescale Semiconductor, Inc. + * Copyright 2019 NXP */ #include <common.h> @@ -139,11 +140,23 @@ unsigned long get_board_ddr_clk(void) return 66666666; } -int select_i2c_ch_pca9547(u8 ch) +int select_i2c_ch_pca9547(u8 ch, int bus_num) { int ret; +#ifdef CONFIG_DM_I2C + struct udevice *dev; + ret = i2c_get_chip_for_busnum(bus_num, I2C_MUX_PCA_ADDR_PRI, + 1, &dev); + if (ret) { + printf("%s: Cannot find udev for a bus %d\n", __func__, + bus_num); + return ret; + } + ret = dm_i2c_write(dev, 0, &ch, 1); +#else ret = i2c_write(I2C_MUX_PCA_ADDR_PRI, 0, 1, &ch, 1); +#endif if (ret) { puts("PCA: failed to select proper channel\n"); return ret; @@ -158,8 +171,10 @@ int dram_init(void) * When resuming from deep sleep, the I2C channel may not be * in the default channel. So, switch to the default channel * before accessing DDR SPD. + * + * PCA9547(0x77) mount on I2C1 bus */ - select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT); + select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT, 0); return fsl_initdram(); } @@ -408,7 +423,7 @@ int board_init(void) erratum_a009942_check_cpo(); #endif - select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT); + select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT, 0); #ifndef CONFIG_SYS_FSL_NO_SERDES fsl_serdes_init(); |