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>

diff --git a/arch/powerpc/dts/p1020-post.dtsi b/arch/powerpc/dts/p1020-post.dtsi
index 1c77702..1dce8e8 100644 (file)
--- a/arch/powerpc/dts/p1020-post.dtsi
+++ b/arch/powerpc/dts/p1020-post.dtsi
@@ -44,6 +44,8 @@
                clock-frequency = <0>;
        };
 
+       /include/ "pq3-i2c-0.dtsi"
+       /include/ "pq3-i2c-1.dtsi"
 };
 
 /* PCIe controller base address 0x9000 */

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 71fca8c..f668d7e 100644 (file)
--- 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));
 

diff --git a/include/configs/P1022DS.h b/include/configs/P1022DS.h
index 5cc2e06..f8b035f 100644 (file)
--- a/include/configs/P1022DS.h
+++ b/include/configs/P1022DS.h
@@ -359,8 +359,8 @@
 #endif
 
 /* I2C */
+#ifndef CONFIG_DM_I2C
 #define CONFIG_SYS_I2C
-#define CONFIG_SYS_I2C_FSL
 #define CONFIG_SYS_FSL_I2C_SPEED       400000
 #define CONFIG_SYS_FSL_I2C_SLAVE       0x7F
 #define CONFIG_SYS_FSL_I2C_OFFSET      0x3000
@@ -368,6 +368,8 @@
 #define CONFIG_SYS_FSL_I2C2_SLAVE      0x7F
 #define CONFIG_SYS_FSL_I2C2_OFFSET     0x3100
 #define CONFIG_SYS_I2C_NOPROBES                {{0, 0x29}}
+#endif
+#define CONFIG_SYS_I2C_FSL
 
 /*
  * I2C2 EEPROM

diff --git a/include/configs/p1_p2_rdb_pc.h b/include/configs/p1_p2_rdb_pc.h
index c42f1a9..d59fd03 100644 (file)
--- a/include/configs/p1_p2_rdb_pc.h
+++ b/include/configs/p1_p2_rdb_pc.h
@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright 2010-2011 Freescale Semiconductor, Inc.
+ * Copyright 2020 NXP
  */
 
 /*
@@ -537,8 +538,8 @@
 #define CONFIG_SYS_NS16550_COM2        (CONFIG_SYS_CCSRBAR+0x4600)
 
 /* I2C */
+#ifndef CONFIG_DM_I2C
 #define CONFIG_SYS_I2C
-#define CONFIG_SYS_I2C_FSL
 #define CONFIG_SYS_FSL_I2C_SPEED       400000
 #define CONFIG_SYS_FSL_I2C_SLAVE       0x7F
 #define CONFIG_SYS_FSL_I2C_OFFSET      0x3000
@@ -546,6 +547,12 @@
 #define CONFIG_SYS_FSL_I2C2_SLAVE      0x7F
 #define CONFIG_SYS_FSL_I2C2_OFFSET     0x3100
 #define CONFIG_SYS_I2C_NOPROBES                { {0, 0x29} }
+#else
+#define CONFIG_I2C_SET_DEFAULT_BUS_NUM
+#define CONFIG_I2C_DEFAULT_BUS_NUMBER  0
+#endif
+
+#define CONFIG_SYS_I2C_FSL
 #define CONFIG_SYS_I2C_EEPROM_ADDR     0x52
 #define CONFIG_SYS_SPD_BUS_NUM         1 /* For rom_loc and flash bank */