dm: arm64: ls1046a: add i2c DM support

This supports i2c DM and enables CONFIG_DM_I2C
for SoC LS1046A

Signed-off-by: Biwen Li <biwen.li@nxp.com>
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>

diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
index 760053e..b256391 100644 (file)
--- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
+++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
@@ -107,11 +107,11 @@ config ARCH_LS1046A
        select SYS_FSL_SRDS_2
        select ARCH_EARLY_INIT_R
        select BOARD_EARLY_INIT_F
-       select SYS_I2C_MXC
-       select SYS_I2C_MXC_I2C1
-       select SYS_I2C_MXC_I2C2
-       select SYS_I2C_MXC_I2C3
-       select SYS_I2C_MXC_I2C4
+       select SYS_I2C_MXC if !DM_I2C
+       select SYS_I2C_MXC_I2C1 if !DM_I2C
+       select SYS_I2C_MXC_I2C2 if !DM_I2C
+       select SYS_I2C_MXC_I2C3 if !DM_I2C
+       select SYS_I2C_MXC_I2C4 if !DM_I2C
        imply SCSI
        imply SCSI_AHCI
 

diff --git a/arch/arm/dts/fsl-ls1046a-frwy.dts b/arch/arm/dts/fsl-ls1046a-frwy.dts
index 3d41e3b..d391593 100644 (file)
--- a/arch/arm/dts/fsl-ls1046a-frwy.dts
+++ b/arch/arm/dts/fsl-ls1046a-frwy.dts
@@ -32,3 +32,6 @@
 
 };
 
+&i2c0 {
+       status = "okay";
+};

diff --git a/arch/arm/dts/fsl-ls1046a-qds.dtsi b/arch/arm/dts/fsl-ls1046a-qds.dtsi
index c95f44f..76dc397 100644 (file)
--- a/arch/arm/dts/fsl-ls1046a-qds.dtsi
+++ b/arch/arm/dts/fsl-ls1046a-qds.dtsi
@@ -80,3 +80,7 @@
 &sata {
        status = "okay";
 };
+
+&i2c0 {
+       status = "okay";
+};

diff --git a/arch/arm/dts/fsl-ls1046a-rdb.dts b/arch/arm/dts/fsl-ls1046a-rdb.dts
index a05c9e9..83e34ab 100644 (file)
--- a/arch/arm/dts/fsl-ls1046a-rdb.dts
+++ b/arch/arm/dts/fsl-ls1046a-rdb.dts
@@ -43,3 +43,11 @@
 &sata {
        status = "okay";
 };
+
+&i2c0 {
+       status = "okay";
+};
+
+&i2c3 {
+       status = "okay";
+};

diff --git a/arch/arm/include/asm/gpio.h b/arch/arm/include/asm/gpio.h
index 5d6b269..333e407 100644 (file)
--- a/arch/arm/include/asm/gpio.h
+++ b/arch/arm/include/asm/gpio.h
@@ -5,7 +5,7 @@
        !defined(CONFIG_ARCH_LS1028A) && !defined(CONFIG_ARCH_LS2080A) && \
        !defined(CONFIG_ARCH_LS1088A) && !defined(CONFIG_ARCH_ASPEED) && \
        !defined(CONFIG_ARCH_LS1012A) && !defined(CONFIG_ARCH_LS1043A) && \
-       !defined(CONFIG_ARCH_U8500) && \
+       !defined(CONFIG_ARCH_LS1046A) && !defined(CONFIG_ARCH_U8500) && \
        !defined(CONFIG_CORTINA_PLATFORM)
 #include <asm/arch/gpio.h>
 #endif

diff --git a/board/freescale/ls1046afrwy/ls1046afrwy.c b/board/freescale/ls1046afrwy/ls1046afrwy.c
index db8b3a5..8c0abb6 100644 (file)
--- a/board/freescale/ls1046afrwy/ls1046afrwy.c
+++ b/board/freescale/ls1046afrwy/ls1046afrwy.c
@@ -36,11 +36,24 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-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;
@@ -149,7 +162,7 @@ val = (in_le32(SMMU_SCR0) | SCR0_CLIENTPD_MASK) & ~(SCR0_USFCFG_MASK);
        sec_init();
 #endif
 
-       select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT);
+       select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT, 0);
        return 0;
 }
 

diff --git a/board/freescale/ls1046aqds/ls1046aqds.c b/board/freescale/ls1046aqds/ls1046aqds.c
index aac5d9a..cabd7ee 100644 (file)
--- a/board/freescale/ls1046aqds/ls1046aqds.c
+++ b/board/freescale/ls1046aqds/ls1046aqds.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2016 Freescale Semiconductor, Inc.
+ * Copyright 2019 NXP
  */
 
 #include <common.h>
@@ -269,11 +270,23 @@ u32 get_lpuart_clk(void)
 }
 #endif
 
-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;
@@ -288,8 +301,10 @@ 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 mount on I2C1 bus
         */
-       select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT);
+       select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT, 0);
        fsl_initdram();
 #if (!defined(CONFIG_SPL) && !defined(CONFIG_TFABOOT)) || \
        defined(CONFIG_SPL_BUILD)
@@ -302,7 +317,7 @@ int dram_init(void)
 
 int i2c_multiplexer_select_vid_channel(u8 channel)
 {
-       return select_i2c_ch_pca9547(channel);
+       return select_i2c_ch_pca9547(channel, 0);
 }
 
 int board_early_init_f(void)
@@ -315,8 +330,10 @@ int board_early_init_f(void)
        u8 uart;
 #endif
 
+#ifdef CONFIG_SYS_I2C
 #ifdef CONFIG_SYS_I2C_EARLY_INIT
        i2c_early_init_f();
+#endif
 #endif
        fsl_lsch2_early_init_f();
 
@@ -394,7 +411,7 @@ int misc_init_r(void)
 
 int board_init(void)
 {
-       select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT);
+       select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT, 0);
 
 #ifdef CONFIG_SYS_FSL_SERDES
        config_serdes_mux();

diff --git a/configs/ls1046afrwy_tfa_defconfig b/configs/ls1046afrwy_tfa_defconfig
index 2c25878..616984f 100644 (file)
--- a/configs/ls1046afrwy_tfa_defconfig
+++ b/configs/ls1046afrwy_tfa_defconfig
@@ -62,3 +62,5 @@ CONFIG_USB_HOST_ETHER=y
 CONFIG_USB_ETHER_ASIX=y
 CONFIG_USB_ETHER_ASIX88179=y
 CONFIG_USB_ETHER_RTL8152=y
+CONFIG_DM_I2C=y
+CONFIG_DM_GPIO=y

diff --git a/configs/ls1046aqds_SECURE_BOOT_defconfig b/configs/ls1046aqds_SECURE_BOOT_defconfig
index 6ea27c7..ed25b7a 100644 (file)
--- a/configs/ls1046aqds_SECURE_BOOT_defconfig
+++ b/configs/ls1046aqds_SECURE_BOOT_defconfig
@@ -60,3 +60,5 @@ CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_RSA=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y
+CONFIG_DM_I2C=y
+CONFIG_DM_GPIO=y

diff --git a/configs/ls1046aqds_defconfig b/configs/ls1046aqds_defconfig
index 04c1176..0a50bb1 100644 (file)
--- a/configs/ls1046aqds_defconfig
+++ b/configs/ls1046aqds_defconfig
@@ -62,3 +62,5 @@ CONFIG_DM_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y
+CONFIG_DM_I2C=y
+CONFIG_DM_GPIO=y

diff --git a/configs/ls1046aqds_lpuart_defconfig b/configs/ls1046aqds_lpuart_defconfig
index b0a24f2..17d1685 100644 (file)
--- a/configs/ls1046aqds_lpuart_defconfig
+++ b/configs/ls1046aqds_lpuart_defconfig
@@ -64,3 +64,5 @@ CONFIG_DM_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y
+CONFIG_DM_I2C=y
+CONFIG_DM_GPIO=y

diff --git a/configs/ls1046aqds_nand_defconfig b/configs/ls1046aqds_nand_defconfig
index 3ffe6a6..0bafcbe 100644 (file)
--- a/configs/ls1046aqds_nand_defconfig
+++ b/configs/ls1046aqds_nand_defconfig
@@ -70,3 +70,5 @@ CONFIG_DM_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y
+CONFIG_DM_I2C=y
+CONFIG_DM_GPIO=y

diff --git a/configs/ls1046aqds_qspi_defconfig b/configs/ls1046aqds_qspi_defconfig
index d6253c7..ff0fd45 100644 (file)
--- a/configs/ls1046aqds_qspi_defconfig
+++ b/configs/ls1046aqds_qspi_defconfig
@@ -58,3 +58,5 @@ CONFIG_DM_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y
+CONFIG_DM_I2C=y
+CONFIG_DM_GPIO=y

diff --git a/configs/ls1046aqds_sdcard_ifc_defconfig b/configs/ls1046aqds_sdcard_ifc_defconfig
index fad3316..78edb45 100644 (file)
--- a/configs/ls1046aqds_sdcard_ifc_defconfig
+++ b/configs/ls1046aqds_sdcard_ifc_defconfig
@@ -80,3 +80,5 @@ CONFIG_DM_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y
+CONFIG_DM_I2C=y
+CONFIG_DM_GPIO=y

diff --git a/configs/ls1046aqds_sdcard_qspi_defconfig b/configs/ls1046aqds_sdcard_qspi_defconfig
index 3571a6f..d085daf 100644 (file)
--- a/configs/ls1046aqds_sdcard_qspi_defconfig
+++ b/configs/ls1046aqds_sdcard_qspi_defconfig
@@ -74,3 +74,5 @@ CONFIG_DM_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y
+CONFIG_DM_I2C=y
+CONFIG_DM_GPIO=y

diff --git a/configs/ls1046aqds_tfa_SECURE_BOOT_defconfig b/configs/ls1046aqds_tfa_SECURE_BOOT_defconfig
index e173747..6a93914 100644 (file)
--- a/configs/ls1046aqds_tfa_SECURE_BOOT_defconfig
+++ b/configs/ls1046aqds_tfa_SECURE_BOOT_defconfig
@@ -61,3 +61,5 @@ CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_RSA=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y
+CONFIG_DM_I2C=y
+CONFIG_DM_GPIO=y

diff --git a/configs/ls1046aqds_tfa_defconfig b/configs/ls1046aqds_tfa_defconfig
index 824fc51..04e6b23 100644 (file)
--- a/configs/ls1046aqds_tfa_defconfig
+++ b/configs/ls1046aqds_tfa_defconfig
@@ -71,3 +71,5 @@ CONFIG_DM_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y
+CONFIG_DM_I2C=y
+CONFIG_DM_GPIO=y

diff --git a/configs/ls1046ardb_emmc_defconfig b/configs/ls1046ardb_emmc_defconfig
index 768ce7a..bbb352d 100644 (file)
--- a/configs/ls1046ardb_emmc_defconfig
+++ b/configs/ls1046ardb_emmc_defconfig
@@ -73,3 +73,5 @@ CONFIG_DM_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y
+CONFIG_DM_I2C=y
+CONFIG_DM_GPIO=y

diff --git a/configs/ls1046ardb_qspi_SECURE_BOOT_defconfig b/configs/ls1046ardb_qspi_SECURE_BOOT_defconfig
index aff9bf8..b9c8a88 100644 (file)
--- a/configs/ls1046ardb_qspi_SECURE_BOOT_defconfig
+++ b/configs/ls1046ardb_qspi_SECURE_BOOT_defconfig
@@ -55,3 +55,5 @@ CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_RSA=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y
+CONFIG_DM_I2C=y
+CONFIG_DM_GPIO=y

diff --git a/configs/ls1046ardb_qspi_defconfig b/configs/ls1046ardb_qspi_defconfig
index b482e73..51edada 100644 (file)
--- a/configs/ls1046ardb_qspi_defconfig
+++ b/configs/ls1046ardb_qspi_defconfig
@@ -57,3 +57,5 @@ CONFIG_DM_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y
+CONFIG_DM_I2C=y
+CONFIG_DM_GPIO=y

diff --git a/configs/ls1046ardb_qspi_spl_defconfig b/configs/ls1046ardb_qspi_spl_defconfig
index 1e2770a..84e0596 100644 (file)
--- a/configs/ls1046ardb_qspi_spl_defconfig
+++ b/configs/ls1046ardb_qspi_spl_defconfig
@@ -77,3 +77,5 @@ CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_SPL_GZIP=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y
+CONFIG_DM_I2C=y
+CONFIG_DM_GPIO=y

diff --git a/configs/ls1046ardb_sdcard_SECURE_BOOT_defconfig b/configs/ls1046ardb_sdcard_SECURE_BOOT_defconfig
index 1f5fa8f..9954e89 100644 (file)
--- a/configs/ls1046ardb_sdcard_SECURE_BOOT_defconfig
+++ b/configs/ls1046ardb_sdcard_SECURE_BOOT_defconfig
@@ -70,3 +70,5 @@ CONFIG_USB_XHCI_DWC3=y
 CONFIG_RSA=y
 CONFIG_SPL_RSA=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y
+CONFIG_DM_I2C=y
+CONFIG_DM_GPIO=y

diff --git a/configs/ls1046ardb_sdcard_defconfig b/configs/ls1046ardb_sdcard_defconfig
index 1970904..3502809 100644 (file)
--- a/configs/ls1046ardb_sdcard_defconfig
+++ b/configs/ls1046ardb_sdcard_defconfig
@@ -72,3 +72,5 @@ CONFIG_DM_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y
+CONFIG_DM_I2C=y
+CONFIG_DM_GPIO=y

diff --git a/configs/ls1046ardb_tfa_SECURE_BOOT_defconfig b/configs/ls1046ardb_tfa_SECURE_BOOT_defconfig
index 1dde0ae..9e3042b 100644 (file)
--- a/configs/ls1046ardb_tfa_SECURE_BOOT_defconfig
+++ b/configs/ls1046ardb_tfa_SECURE_BOOT_defconfig
@@ -54,3 +54,5 @@ CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_RSA=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y
+CONFIG_DM_I2C=y
+CONFIG_DM_GPIO=y

diff --git a/configs/ls1046ardb_tfa_defconfig b/configs/ls1046ardb_tfa_defconfig
index 280ca83..2f7686b 100644 (file)
--- a/configs/ls1046ardb_tfa_defconfig
+++ b/configs/ls1046ardb_tfa_defconfig
@@ -58,3 +58,5 @@ CONFIG_DM_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y
+CONFIG_DM_I2C=y
+CONFIG_DM_GPIO=y

diff --git a/drivers/power/power_i2c.c b/drivers/power/power_i2c.c
index bcddff2..b30f223 100644 (file)
--- a/drivers/power/power_i2c.c
+++ b/drivers/power/power_i2c.c
@@ -7,6 +7,7 @@
  * Stefano Babic, DENX Software Engineering, sbabic@denx.de
  *
  * (C) Copyright 2008-2009 Freescale Semiconductor, Inc.
+ * (C) Copyright 2019 NXP
  */
 
 #include <common.h>
@@ -21,8 +22,20 @@ int pmic_reg_write(struct pmic *p, u32 reg, u32 val)
 
        if (check_reg(p, reg))
                return -EINVAL;
+#if defined(CONFIG_DM_I2C)
+       struct udevice *dev;
+       int ret;
 
+       ret = i2c_get_chip_for_busnum(p->bus, pmic_i2c_addr,
+                                     1, &dev);
+       if (ret) {
+               printf("%s: Cannot find udev for a bus %d\n", __func__,
+                      p->bus);
+               return -ENXIO;
+       }
+#else /* Non DM I2C support - will be removed */
        I2C_SET_BUS(p->bus);
+#endif
 
        switch (pmic_i2c_tx_num) {
        case 3:
@@ -53,7 +66,11 @@ int pmic_reg_write(struct pmic *p, u32 reg, u32 val)
                return -EINVAL;
        }
 
+#if defined(CONFIG_DM_I2C)
+       return dm_i2c_write(dev, reg, buf, pmic_i2c_tx_num);
+#else
        return i2c_write(pmic_i2c_addr, reg, 1, buf, pmic_i2c_tx_num);
+#endif
 }
 
 int pmic_reg_read(struct pmic *p, u32 reg, u32 *val)
@@ -65,9 +82,21 @@ int pmic_reg_read(struct pmic *p, u32 reg, u32 *val)
        if (check_reg(p, reg))
                return -EINVAL;
 
-       I2C_SET_BUS(p->bus);
+#if defined(CONFIG_DM_I2C)
+       struct udevice *dev;
 
+       ret = i2c_get_chip_for_busnum(p->bus, pmic_i2c_addr,
+                                     1, &dev);
+       if (ret) {
+               printf("%s: Cannot find udev for a bus %d\n", __func__,
+                      p->bus);
+               return -ENXIO;
+       }
+       ret = dm_i2c_read(dev, reg, buf, pmic_i2c_tx_num);
+#else /* Non DM I2C support - will be removed */
+       I2C_SET_BUS(p->bus);
        ret = i2c_read(pmic_i2c_addr, reg, 1, buf, pmic_i2c_tx_num);
+#endif
        if (ret)
                return ret;
 
@@ -100,12 +129,25 @@ int pmic_reg_read(struct pmic *p, u32 reg, u32 *val)
 
 int pmic_probe(struct pmic *p)
 {
-       i2c_set_bus_num(p->bus);
        debug("Bus: %d PMIC:%s probed!\n", p->bus, p->name);
+#if defined(CONFIG_DM_I2C)
+       struct udevice *dev;
+       int ret;
+
+       ret = i2c_get_chip_for_busnum(p->bus, pmic_i2c_addr,
+                                     1, &dev);
+       if (ret) {
+               printf("%s: Cannot find udev for a bus %d\n", __func__,
+                      p->bus);
+               return -ENXIO;
+       }
+#else /* Non DM I2C support - will be removed */
+       i2c_set_bus_num(p->bus);
        if (i2c_probe(pmic_i2c_addr)) {
                printf("Can't find PMIC:%s\n", p->name);
                return -ENODEV;
        }
+#endif
 
        return 0;
 }

diff --git a/include/configs/ls1046a_common.h b/include/configs/ls1046a_common.h
index 978df3c..e80c299 100644 (file)
--- a/include/configs/ls1046a_common.h
+++ b/include/configs/ls1046a_common.h
@@ -16,6 +16,7 @@
 #define SPL_NO_QSPI
 #define SPL_NO_USB
 #define SPL_NO_SATA
+#undef CONFIG_DM_I2C
 #endif
 #if defined(CONFIG_SPL_BUILD) && \
        (defined(CONFIG_NAND_BOOT) || defined(CONFIG_QSPI_BOOT))
@@ -126,7 +127,17 @@
 #endif
 
 /* I2C */
+#ifndef CONFIG_DM_I2C
 #define CONFIG_SYS_I2C
+#define CONFIG_SYS_I2C_MXC
+#define CONFIG_SYS_I2C_MXC_I2C1                /* enable I2C bus 1 */
+#define CONFIG_SYS_I2C_MXC_I2C2                /* enable I2C bus 2 */
+#define CONFIG_SYS_I2C_MXC_I2C3                /* enable I2C bus 3 */
+#define CONFIG_SYS_I2C_MXC_I2C4                /* enable I2C bus 4 */
+#else
+#define CONFIG_I2C_SET_DEFAULT_BUS_NUM
+#define CONFIG_I2C_DEFAULT_BUS_NUMBER 0
+#endif
 
 /* PCIe */
 #define CONFIG_PCIE1           /* PCIE controller 1 */