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dm: powerpc: T2080/T2081: add i2c DM support

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This supports i2c DM for SoC T2080/T2081

Signed-off-by: Biwen Li <biwen.li@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
This commit is contained in:
Biwen Li
2020-05-01 20:04:19 +08:00
committed by Priyanka Jain
parent 30ea84768b
commit 8e4be6dfb7
4 changed files with 34 additions and 6 deletions
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19
board/freescale/t208xqds/t208xqds.c
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@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2009-2013 Freescale Semiconductor, Inc.
* Copyright 2020 NXP
*/
#include <common.h>
@@ -75,11 +76,23 @@ int checkboard(void)
return 0;
}
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;
@@ -90,7 +103,7 @@ int select_i2c_ch_pca9547(u8 ch)
int i2c_multiplexer_select_vid_channel(u8 channel)
{
return select_i2c_ch_pca9547(channel);
return select_i2c_ch_pca9547(channel, 0);
}
int brd_mux_lane_to_slot(void)
@@ -368,7 +381,7 @@ int board_early_init_r(void)
printf("Warning: Adjusting core voltage failed.\n");
brd_mux_lane_to_slot();
select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT);
select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT, 0);
return 0;
}