dm: powerpc: T1023/T1024: add i2c DM support

This supports i2c DM for SoC T1023/T1024

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

2 files changed, 95 insertions, 3 deletions

diff --git a/board/freescale/t102xqds/t102xqds.c b/board/freescale/t102xqds/t102xqds.c
index e42337e..32b4780 100644
--- a/board/freescale/t102xqds/t102xqds.c
+++ b/board/freescale/t102xqds/t102xqds.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2014 Freescale Semiconductor, Inc.
+ * Copyright 2020 NXP
  */
 
 #include <common.h>
@@ -75,11 +76,24 @@ int checkboard(void)
 	return 0;
 }
 
-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;
@@ -191,6 +205,82 @@ void board_retimer_ds125df111_init(void)
 {
 	u8 reg;
 
+#ifdef CONFIG_DM_I2C
+	struct udevice *dev;
+	int ret, bus_num = 0;
+
+	ret = i2c_get_chip_for_busnum(bus_num, I2C_MUX_PCA_ADDR_PRI,
+				      1, &dev);
+	if (ret)
+		goto failed;
+
+	/* Retimer DS125DF111 is connected to I2C1_CH7_CH5 */
+	reg = I2C_MUX_CH7;
+	dm_i2c_write(dev, 0, &reg, 1);
+
+	ret = i2c_get_chip_for_busnum(bus_num, I2C_MUX_PCA_ADDR_SEC,
+				      1, &dev);
+	if (ret)
+		goto failed;
+
+	reg = I2C_MUX_CH5;
+	dm_i2c_write(dev, 0, &reg, 1);
+
+	/* Access to Control/Shared register */
+	ret = i2c_get_chip_for_busnum(bus_num, I2C_RETIMER_ADDR,
+				      1, &dev);
+	if (ret)
+		goto failed;
+	reg = 0x0;
+	dm_i2c_write(dev, 0xff, &reg, 1);
+
+	/* Read device revision and ID */
+	dm_i2c_read(dev, 1, &reg, 1);
+	debug("Retimer version id = 0x%x\n", reg);
+
+	/* Enable Broadcast */
+	reg = 0x0c;
+	dm_i2c_write(dev, 0xff, &reg, 1);
+
+	/* Reset Channel Registers */
+	dm_i2c_read(dev, 0, &reg, 1);
+	reg |= 0x4;
+	dm_i2c_write(dev, 0, &reg, 1);
+
+	/* Enable override divider select and Enable Override Output Mux */
+	dm_i2c_read(dev, 9, &reg, 1);
+	reg |= 0x24;
+	dm_i2c_write(dev, 9, &reg, 1);
+
+	/* Select VCO Divider to full rate (000) */
+	dm_i2c_read(dev, 0x18, &reg, 1);
+	reg &= 0x8f;
+	dm_i2c_write(dev, 0x18, &reg, 1);
+
+	/* Select active PFD MUX input as re-timed data (001) */
+	dm_i2c_read(dev, 0x1e, &reg, 1);
+	reg &= 0x3f;
+	reg |= 0x20;
+	dm_i2c_write(dev, 0x1e, &reg, 1);
+
+	/* Set data rate as 10.3125 Gbps */
+	reg = 0x0;
+	dm_i2c_write(dev, 0x60, &reg, 1);
+	reg = 0xb2;
+	dm_i2c_write(dev, 0x61, &reg, 1);
+	reg = 0x90;
+	dm_i2c_write(dev, 0x62, &reg, 1);
+	reg = 0xb3;
+	dm_i2c_write(dev, 0x63, &reg, 1);
+	reg = 0xcd;
+	dm_i2c_write(dev, 0x64, &reg, 1);
+	return;
+
+failed:
+	printf("%s: Cannot find udev for a bus %d\n", __func__,
+	       bus_num);
+	return;
+#else
 	/* Retimer DS125DF111 is connected to I2C1_CH7_CH5 */
 	reg = I2C_MUX_CH7;
 	i2c_write(I2C_MUX_PCA_ADDR_PRI, 0, 1, &reg, 1);
@@ -241,6 +331,7 @@ void board_retimer_ds125df111_init(void)
 	i2c_write(I2C_RETIMER_ADDR, 0x63, 1, &reg, 1);
 	reg = 0xcd;
 	i2c_write(I2C_RETIMER_ADDR, 0x64, 1, &reg, 1);
+#endif
 }
 
 int board_early_init_f(void)
@@ -281,7 +372,7 @@ int board_early_init_r(void)
 		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 		0, flash_esel, BOOKE_PAGESZ_256M, 1);
 #endif
-	select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT);
+	select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT, 0);
 	board_mux_lane_to_slot();
 	board_retimer_ds125df111_init();
 
diff --git a/board/freescale/t102xqds/t102xqds.h b/board/freescale/t102xqds/t102xqds.h
index 15de1325..d327b5e 100644
--- a/board/freescale/t102xqds/t102xqds.h
+++ b/board/freescale/t102xqds/t102xqds.h
@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright 2014 Freescale Semiconductor, Inc.
+ * Copyright 2020 NXP
  */
 
 #ifndef __T102x_QDS_H__
@@ -8,6 +9,6 @@
 
 void fdt_fixup_board_enet(void *blob);
 void pci_of_setup(void *blob, bd_t *bd);
-int select_i2c_ch_pca9547(u8 ch);
+int select_i2c_ch_pca9547(u8 ch, int bus_num);
 
 #endif