dm: arm: ls1021a: add i2c DM support

[oweals/u-boot.git] / board / freescale / ls1021aqds / ls1021aqds.c

diff --git a/board/freescale/ls1021aqds/ls1021aqds.c b/board/freescale/ls1021aqds/ls1021aqds.c
index b7f8f1d57866a19e4e582a841f196e9cdce4de72..1ae822e5107b55675386b3fa164526914fbd7ea7 100644 (file)
--- 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();