arm: mvebu: helios4: Enable I2C and IO Expander
Enable Marvell I2C driver and I2C IO expander. Set default bus to
external I2C bus. Define I2C aliases in device tree so it can be
recognized by the driver.
Signed-off-by: Aditya Prayoga <aditya@kobol.io>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-By: Dennis Gilmore <dgilmore@redhat.com>
Reviewed-By: Dennis Gilmore <dgilmore@redhat.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/arm/dts/armada-388-helios4-u-boot.dtsi b/arch/arm/dts/armada-388-helios4-u-boot.dtsi
new file mode 100644
index 0000000..bd8c6ce
--- /dev/null
+++ b/arch/arm/dts/armada-388-helios4-u-boot.dtsi
@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/ {
+ aliases {
+ i2c0 = &i2c0;
+ i2c1 = &i2c1;
+ };
+};
diff --git a/board/kobol/helios4/helios4.c b/board/kobol/helios4/helios4.c
index 15e78de..8c0864b 100644
--- a/board/kobol/helios4/helios4.c
+++ b/board/kobol/helios4/helios4.c
@@ -33,18 +33,6 @@
#define BOARD_GPP_POL_LOW 0x0
#define BOARD_GPP_POL_MID 0x0
-/* IO expander on Marvell GP board includes e.g. fan enabling */
-struct marvell_io_exp {
- u8 addr;
- u8 val;
-};
-
-static struct marvell_io_exp io_exp[] = {
- {6, 0xf9},
- {2, 0x46}, /* Assert reset signals and enable USB3 current limiter */
- {6, 0xb9}
-};
-
static struct serdes_map board_serdes_map[] = {
{SATA0, SERDES_SPEED_6_GBPS, SERDES_DEFAULT_MODE, 0, 0},
{USB3_HOST0, SERDES_SPEED_5_GBPS, SERDES_DEFAULT_MODE, 0, 0},
@@ -123,29 +111,9 @@
int board_init(void)
{
- int i;
-
/* Address of boot parameters */
gd->bd->bi_boot_params = mvebu_sdram_bar(0) + 0x100;
- /* Init I2C IO expanders */
- for (i = 0; i < ARRAY_SIZE(io_exp); i++) {
- struct udevice *dev;
- int ret;
-
- ret = i2c_get_chip_for_busnum(0, io_exp[i].addr, 1, &dev);
- if (ret) {
- printf("Cannot find I2C: %d\n", ret);
- return 0;
- }
-
- ret = dm_i2c_write(dev, io_exp[i].val, &io_exp[i].val, 1);
- if (ret) {
- printf("Failed to set IO expander via I2C\n");
- return -EIO;
- }
- }
-
return 0;
}
diff --git a/configs/helios4_defconfig b/configs/helios4_defconfig
index e30eb3d..6471fa3 100644
--- a/configs/helios4_defconfig
+++ b/configs/helios4_defconfig
@@ -38,7 +38,11 @@
CONFIG_NET_RANDOM_ETHADDR=y
CONFIG_SPL_OF_TRANSLATE=y
CONFIG_SCSI_AHCI=y
+CONFIG_DM_PCA953X=y
CONFIG_DM_I2C=y
+CONFIG_SYS_I2C_MVTWSI=y
+CONFIG_I2C_SET_DEFAULT_BUS_NUM=y
+CONFIG_I2C_DEFAULT_BUS_NUMBER=0x1
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_SDMA=y
CONFIG_MMC_SDHCI_MV=y