[U-Boot] [PATCH 03/42] board: freescale: ls1012ardb: ls1012ardb.c: support dm_i2c_* API
Biwen Li
biwen.li at nxp.com
Thu Nov 14 10:36:02 UTC 2019
This supports dm_i2c_* API for board LS1012ARDB
Signed-off-by: Biwen Li <biwen.li at nxp.com>
---
board/freescale/ls1012ardb/ls1012ardb.c | 147 ++++++++++++++++++++----
1 file changed, 123 insertions(+), 24 deletions(-)
diff --git a/board/freescale/ls1012ardb/ls1012ardb.c b/board/freescale/ls1012ardb/ls1012ardb.c
index e4527c19b8..271227a976 100644
--- a/board/freescale/ls1012ardb/ls1012ardb.c
+++ b/board/freescale/ls1012ardb/ls1012ardb.c
@@ -32,13 +32,27 @@ int checkboard(void)
{
#ifdef CONFIG_TARGET_LS1012ARDB
u8 in1;
+ int ret, bus_num = 0;
puts("Board: LS1012ARDB ");
/* Initialize i2c early for Serial flash bank information */
- i2c_set_bus_num(0);
+#if defined(CONFIG_DM_I2C)
+ struct udevice *dev;
- if (i2c_read(I2C_MUX_IO_ADDR, I2C_MUX_IO_1, 1, &in1, 1) < 0) {
+ ret = i2c_get_chip_for_busnum(bus_num, I2C_MUX_IO_ADDR,
+ 1, &dev);
+ if (ret) {
+ printf("%s: Cannot find udev for a bus %d\n", __func__,
+ bus_num);
+ return -ENXIO;
+ }
+ ret = dm_i2c_read(dev, I2C_MUX_IO_1, &in1, 1);
+#else /* Non DM I2C support - will be removed */
+ i2c_set_bus_num(bus_num);
+ ret = i2c_read(I2C_MUX_IO_ADDR, I2C_MUX_IO_1, 1, &in1, 1);
+#endif
+ if (ret < 0) {
printf("Error reading i2c boot information!\n");
return 0; /* Don't want to hang() on this error */
}
@@ -173,11 +187,25 @@ int esdhc_status_fixup(void *blob, const char *compat)
bool sdhc2_en = false;
u8 mux_sdhc2;
u8 io = 0;
+ int ret, bus_num = 0;
- i2c_set_bus_num(0);
+#if defined(CONFIG_DM_I2C)
+ struct udevice *dev;
+ ret = i2c_get_chip_for_busnum(bus_num, I2C_MUX_IO_ADDR,
+ 1, &dev);
+ if (ret) {
+ printf("%s: Cannot find udev for a bus %d\n", __func__,
+ bus_num);
+ return -ENXIO;
+ }
+ ret = dm_i2c_read(dev, I2C_MUX_IO_1, &io, 1);
+#else
+ i2c_set_bus_num(bus_num);
/* IO1[7:3] is the field of board revision info. */
- if (i2c_read(I2C_MUX_IO_ADDR, I2C_MUX_IO_1, 1, &io, 1) < 0) {
+ ret = i2c_read(I2C_MUX_IO_ADDR, I2C_MUX_IO_1, 1, &io, 1);
+#endif
+ if (ret < 0) {
printf("Error reading i2c boot information!\n");
return 0;
}
@@ -200,7 +228,12 @@ int esdhc_status_fixup(void *blob, const char *compat)
* 10 - eMMC Memory
* 11 - SPI
*/
- if (i2c_read(I2C_MUX_IO_ADDR, I2C_MUX_IO_0, 1, &io, 1) < 0) {
+#if defined(CONFIG_DM_I2C)
+ ret = dm_i2c_read(dev, I2C_MUX_IO_0, &io, 1);
+#else
+ ret = i2c_read(I2C_MUX_IO_ADDR, I2C_MUX_IO_0, 1, &io, 1);
+#endif
+ if (ret < 0) {
printf("Error reading i2c boot information!\n");
return 0;
}
@@ -231,16 +264,63 @@ int ft_board_setup(void *blob, bd_t *bd)
static int switch_to_bank1(void)
{
- u8 data;
- int ret;
+ u8 data = 0xf4, chip_addr = 0x24, offset_addr = 0x03;
+ int ret, bus_num = 0;
- i2c_set_bus_num(0);
+#if defined(CONFIG_DM_I2C)
+ struct udevice *dev;
+
+ ret = i2c_get_chip_for_busnum(bus_num, chip_addr,
+ 1, &dev);
+ if (ret) {
+ printf("%s: Cannot find udev for a bus %d\n", __func__,
+ bus_num);
+ return -ENXIO;
+ }
+ /*
+ * --------------------------------------------------------------------------------
+ * | I2C bus | I2C address | Device | Notes |
+ * --------------------------------------------------------------------------------
+ * | I2C1 | 0x24, 0x25, 0x26 | IO expander (CFG,| Provides 16bits of General |
+ * | | | RESET, and INT/ | Purpose parallel Input/Output|
+ * | | | KW41GPIO) - NXP | (GPIO) expansion for the |
+ * | | | PCAL9555AHF | I2C bus |
+ * --------------------------------------------------------------------------------
+ * - mount three IO expander(PCAL9555AHF) on I2C1
+ *
+ * PCAL9555A device address
+ * slave address
+ * --------------------------------------
+ * | 0 | 1 | 0 | 0 | A2 | A1 | A0 | R/W |
+ * --------------------------------------
+ * | fixed | hardware selectable|
+ *
+ * Output port 1(Pinter register bits = 0x03)
+ *
+ * P1_[7~0] = 0xf4
+ * P1_0 <---> CFG_MUX_QSPI_S0
+ * P1_1 <---> CFG_MUX_QSPI_S1
+ * CFG_MUX_QSPI_S[1:0] = 0b00
+ *
+ * QSPI chip-select demultiplexer select
+ * ----------------------------------------------------------------------------
+ * | CFG_MUX_QSPI_S1 | CFG_MUX_QSPI_S0 | Values |
+ * ---------------------------------------------------------------------------
+ * | 0 | 0 |CS routed to SPI memory bank1(default)|
+ * ----------------------------------------------------------------------------
+ * | 0 | 1 |CS routed to SPI memory bank2 |
+ * ----------------------------------------------------------------------------
+ *
+ */
+ ret = dm_i2c_write(dev, offset_addr, &data, 1);
+#else /* Non DM I2C support - will be removed */
+ i2c_set_bus_num(bus_num);
+ ret = i2c_write(chip_addr, offset_addr, 1, &data, 1);
+#endif
- data = 0xf4;
- ret = i2c_write(0x24, 0x3, 1, &data, 1);
if (ret) {
printf("i2c write error to chip : %u, addr : %u, data : %u\n",
- 0x24, 0x3, data);
+ chip_addr, offset_addr, data);
}
return ret;
@@ -248,25 +328,44 @@ static int switch_to_bank1(void)
static int switch_to_bank2(void)
{
- u8 data;
- int ret;
+ u8 data[2] = {0xfc, 0xf5}, offset_addr[2] = {0x7, 0x3}, chip_addr = 0x24;
+ int ret, i, bus_num = 0;
- i2c_set_bus_num(0);
+#if defined(CONFIG_DM_I2C)
+ struct udevice *dev;
- data = 0xfc;
- ret = i2c_write(0x24, 0x7, 1, &data, 1);
+ ret = i2c_get_chip_for_busnum(bus_num, chip_addr,
+ 1, &dev);
if (ret) {
- printf("i2c write error to chip : %u, addr : %u, data : %u\n",
- 0x24, 0x7, data);
- goto err;
+ printf("%s: Cannot find udev for a bus %d\n", __func__,
+ bus_num);
+ return -ENXIO;
}
+#else /* Non DM I2C support - will be removed */
+ i2c_set_bus_num(bus_num);
+#endif
- data = 0xf5;
- ret = i2c_write(0x24, 0x3, 1, &data, 1);
- if (ret) {
- printf("i2c write error to chip : %u, addr : %u, data : %u\n",
- 0x24, 0x3, data);
+ /*
+ * 1th step: config port 1
+ * - the port 1 pin is enabled as an output
+ * 2th step: output port 1
+ * - P1_[7:0] output 0xf5,
+ * then CFG_MUX_QSPI_S[1:0] equal to 0b01,
+ * CS routed to SPI memory bank2
+ */
+ for (i = 0; i < sizeof(data); i++) {
+#if defined(CONFIG_DM_I2C)
+ ret = dm_i2c_write(dev, offset_addr[i], &data[i], 1);
+#else /* Non DM I2C support - will be removed */
+ ret = i2c_write(chip_addr, offset_addr[i], 1, &data[i], 1);
+#endif
+ if (ret) {
+ printf("i2c write error to chip : %u, addr : %u, data : %u\n",
+ chip_addr, offset_addr[i], data[i]);
+ goto err;
+ }
}
+
err:
return ret;
}
--
2.17.1
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