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dm: powerpc: T1040/T1042: add i2c DM support

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This supports i2c DM for SoC T1040/T1042

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 20:04:21 +08:00
committed by Priyanka Jain
parent 613e66eb80
commit d2e3f7c608
6 changed files with 40 additions and 7 deletions
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5
board/freescale/t1040qds/diu.c
View File

@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2014 Freescale Semiconductor, Inc.
* Copyright 2020 NXP
* Author: Priyanka Jain <Priyanka.Jain@freescale.com>
*/
@@ -48,7 +49,7 @@ void diu_set_pixel_clock(unsigned int pixclock)
/* Program HDMI encoder */
/* Switch channel to DIU */
select_i2c_ch_pca9547(I2C_MUX_CH_DIU);
select_i2c_ch_pca9547(I2C_MUX_CH_DIU, 0);
/* Set dispaly encoder */
ret = diu_set_dvi_encoder(temp);
@@ -58,7 +59,7 @@ void diu_set_pixel_clock(unsigned int pixclock)
}
/* Switch channel to default */
select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT);
select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT, 0);
/* Program pixel clock */
out_be32((unsigned *)CONFIG_SYS_FSL_SCFG_PIXCLK_ADDR,

18
board/freescale/t1040qds/t1040qds.c
View File

@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2013 Freescale Semiconductor, Inc.
* Copyright 2020 NXP
*/
#include <common.h>
@@ -79,11 +80,24 @@ 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;
@@ -154,7 +168,7 @@ int board_early_init_r(void)
MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
0, flash_esel, BOOKE_PAGESZ_256M, 1);
#endif
select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT);
select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT, 0);
return 0;
}

3
board/freescale/t1040qds/t1040qds.h
View File

@@ -1,6 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright 2013 Freescale Semiconductor, Inc.
* Copyright 2020 NXP
*/
#ifndef __T1040_QDS_H__
@@ -8,6 +9,6 @@
void fdt_fixup_board_enet(void *blob);
void pci_of_setup(void *blob, bd_t *bd);
int select_i2c_ch_pca9547(u8 ch);
int select_i2c_ch_pca9547(u8 ch, int bus_bum);
#endif