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authorStefan Roese <sr@denx.de>2016-10-25 10:41:45 (GMT)
committerStefan Roese <sr@denx.de>2016-12-05 12:28:23 (GMT)
commitacd3b0760b1fb045cc67f394c33029efba391458 (patch)
treeb39f19a4a4b5bb6ea415c7d7cf9ceb21066cf810
parentbf2150b9aea145a4b33abc4b5efc7ac515a04498 (diff)
downloadu-boot-acd3b0760b1fb045cc67f394c33029efba391458.tar.xz
arm64: mvebu: armada-8k: Only configure xHCI power on DB-88F7040 board
This patch uses of_machine_is_compatible() to detect the board at runtime and only configured the I2C IO expander for the xHCI power / reset on the DB-88F7040 board. As this code will be used by other Armada-7k/8k ports, its necessary to use this runtime detection here. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Nadav Haklai <nadavh@marvell.com> Cc: Neta Zur Hershkovits <neta@marvell.com> Cc: Kostya Porotchkin <kostap@marvell.com> Cc: Omri Itach <omrii@marvell.com> Cc: Igal Liberman <igall@marvell.com> Cc: Haim Boot <hayim@marvell.com> Cc: Hanna Hawa <hannah@marvell.com>
-rw-r--r--board/Marvell/mvebu_armada-8k/board.c146
1 files changed, 78 insertions, 68 deletions
diff --git a/board/Marvell/mvebu_armada-8k/board.c b/board/Marvell/mvebu_armada-8k/board.c
index 48bd55c..7d1b5d9 100644
--- a/board/Marvell/mvebu_armada-8k/board.c
+++ b/board/Marvell/mvebu_armada-8k/board.c
@@ -5,6 +5,7 @@
*/
#include <common.h>
+#include <dm.h>
#include <i2c.h>
#include <asm/io.h>
#include <asm/arch/cpu.h>
@@ -12,6 +13,11 @@
DECLARE_GLOBAL_DATA_PTR;
+/*
+ * Information specific to the DB-88F7040 eval board. We strive to use
+ * DT for such platform specfic configurations. At some point, this
+ * might be removed here and implemented via DT.
+ */
/* IO expander I2C device */
#define I2C_IO_EXP_ADDR 0x21
#define I2C_IO_CFG_REG_0 0x6
@@ -44,45 +50,47 @@ int board_xhci_config(void)
int ret;
u8 buf[8];
- /* Configure IO exander PCA9555: 7bit address 0x21 */
- ret = i2c_get_chip_for_busnum(0, I2C_IO_EXP_ADDR, 1, &dev);
- if (ret) {
- printf("Cannot find PCA9555: %d\n", ret);
- return 0;
- }
-
- /*
- * Read configuration (direction) and set VBUS pin as output
- * (reset pin = output)
- */
- ret = dm_i2c_read(dev, I2C_IO_CFG_REG_0, buf, 1);
- if (ret) {
- printf("Failed to read IO expander value via I2C\n");
- return -EIO;
- }
- buf[0] &= ~I2C_IO_REG_VBUS;
- buf[0] &= ~I2C_IO_REG_CL;
- ret = dm_i2c_write(dev, I2C_IO_CFG_REG_0, buf, 1);
- if (ret) {
- printf("Failed to set IO expander via I2C\n");
- return -EIO;
- }
-
- /* Read output value and configure it */
- ret = dm_i2c_read(dev, I2C_IO_DATA_OUT_REG_0, buf, 1);
- if (ret) {
- printf("Failed to read IO expander value via I2C\n");
- return -EIO;
+ if (of_machine_is_compatible("marvell,armada7040-db")) {
+ /* Configure IO exander PCA9555: 7bit address 0x21 */
+ ret = i2c_get_chip_for_busnum(0, I2C_IO_EXP_ADDR, 1, &dev);
+ if (ret) {
+ printf("Cannot find PCA9555: %d\n", ret);
+ return 0;
+ }
+
+ /*
+ * Read configuration (direction) and set VBUS pin as output
+ * (reset pin = output)
+ */
+ ret = dm_i2c_read(dev, I2C_IO_CFG_REG_0, buf, 1);
+ if (ret) {
+ printf("Failed to read IO expander value via I2C\n");
+ return -EIO;
+ }
+ buf[0] &= ~I2C_IO_REG_VBUS;
+ buf[0] &= ~I2C_IO_REG_CL;
+ ret = dm_i2c_write(dev, I2C_IO_CFG_REG_0, buf, 1);
+ if (ret) {
+ printf("Failed to set IO expander via I2C\n");
+ return -EIO;
+ }
+
+ /* Read output value and configure it */
+ ret = dm_i2c_read(dev, I2C_IO_DATA_OUT_REG_0, buf, 1);
+ if (ret) {
+ printf("Failed to read IO expander value via I2C\n");
+ return -EIO;
+ }
+ buf[0] &= ~I2C_IO_REG_VBUS;
+ buf[0] |= I2C_IO_REG_CL;
+ ret = dm_i2c_write(dev, I2C_IO_DATA_OUT_REG_0, buf, 1);
+ if (ret) {
+ printf("Failed to set IO expander via I2C\n");
+ return -EIO;
+ }
+
+ mdelay(500); /* required delay to let output value settle */
}
- buf[0] &= ~I2C_IO_REG_VBUS;
- buf[0] |= I2C_IO_REG_CL;
- ret = dm_i2c_write(dev, I2C_IO_DATA_OUT_REG_0, buf, 1);
- if (ret) {
- printf("Failed to set IO expander via I2C\n");
- return -EIO;
- }
-
- mdelay(500); /* required delay to let output value settle */
return 0;
}
@@ -93,38 +101,40 @@ int board_xhci_enable(void)
int ret;
u8 buf[8];
- /*
- * This function enables all USB ports simultaniously,
- * it only needs to get called once
- */
- if (usb_enabled)
- return 0;
-
- /* Configure IO exander PCA9555: 7bit address 0x21 */
- ret = i2c_get_chip_for_busnum(0, I2C_IO_EXP_ADDR, 1, &dev);
- if (ret) {
- printf("Cannot find PCA9555: %d\n", ret);
- return 0;
- }
-
- /* Read VBUS output value */
- ret = dm_i2c_read(dev, I2C_IO_DATA_OUT_REG_0, buf, 1);
- if (ret) {
- printf("Failed to read IO expander value via I2C\n");
- return -EIO;
+ if (of_machine_is_compatible("marvell,armada7040-db")) {
+ /*
+ * This function enables all USB ports simultaniously,
+ * it only needs to get called once
+ */
+ if (usb_enabled)
+ return 0;
+
+ /* Configure IO exander PCA9555: 7bit address 0x21 */
+ ret = i2c_get_chip_for_busnum(0, I2C_IO_EXP_ADDR, 1, &dev);
+ if (ret) {
+ printf("Cannot find PCA9555: %d\n", ret);
+ return 0;
+ }
+
+ /* Read VBUS output value */
+ ret = dm_i2c_read(dev, I2C_IO_DATA_OUT_REG_0, buf, 1);
+ if (ret) {
+ printf("Failed to read IO expander value via I2C\n");
+ return -EIO;
+ }
+
+ /* Enable VBUS power: Set output value of VBUS pin as enabled */
+ buf[0] |= I2C_IO_REG_VBUS;
+ ret = dm_i2c_write(dev, I2C_IO_DATA_OUT_REG_0, buf, 1);
+ if (ret) {
+ printf("Failed to set IO expander via I2C\n");
+ return -EIO;
+ }
+
+ mdelay(500); /* required delay to let output value settle */
+ usb_enabled = 1;
}
- /* Enable VBUS power: Set output value of VBUS pin as enabled */
- buf[0] |= I2C_IO_REG_VBUS;
- ret = dm_i2c_write(dev, I2C_IO_DATA_OUT_REG_0, buf, 1);
- if (ret) {
- printf("Failed to set IO expander via I2C\n");
- return -EIO;
- }
-
- mdelay(500); /* required delay to let output value settle */
- usb_enabled = 1;
-
return 0;
}