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[U-Boot,v5] armv8: ls1028ardb: enable DisplayPort Power support

Message ID 20191118052609.38400-1-wen.he_1@nxp.com
State Awaiting Upstream
Delegated to: Priyanka Jain
Headers show
Series [U-Boot,v5] armv8: ls1028ardb: enable DisplayPort Power support | expand

Commit Message

Wen He Nov. 18, 2019, 5:26 a.m. UTC 
Enable DP_PWR signal to power the DP to HDMI converter cable.

Signed-off-by: Wen He <wen.he_1@nxp.com>
---
 board/freescale/ls1028a/ls1028a.c | 12 ++++++++++++
 include/configs/ls1028a_common.h  |  3 +++
 2 files changed, 15 insertions(+)
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Patch

diff --git a/board/freescale/ls1028a/ls1028a.c b/board/freescale/ls1028a/ls1028a.c
index 095971448f..9281717264 100644
--- a/board/freescale/ls1028a/ls1028a.c
+++ b/board/freescale/ls1028a/ls1028a.c
@@ -82,7 +82,19 @@  int board_init(void)
 	if (!i2c_get_chip_for_busnum(0, I2C_MUX_PCA_ADDR_PRI, 1, &dev))
 		dm_i2c_write(dev, 0x0b, &val, 1);
 #endif
+#endif
 
+#if defined(CONFIG_TARGET_LS1028ARDB)
+	u8 reg;
+
+	reg = QIXIS_READ(brdcfg[4]);
+	/*
+	 * Field | Function
+	 * 3     | DisplayPort Power Enable (net DP_PWR_EN):
+	 * DPPWR | 0= DP_PWR is enabled.
+	 */
+	reg &= ~(DP_PWD_EN_DEFAULT_MASK);
+	QIXIS_WRITE(brdcfg[4], reg);
 #endif
 	return 0;
 }
diff --git a/include/configs/ls1028a_common.h b/include/configs/ls1028a_common.h
index 40fcd22582..99f5c21689 100644
--- a/include/configs/ls1028a_common.h
+++ b/include/configs/ls1028a_common.h
@@ -192,6 +192,9 @@ 
 #define CONFIG_SYS_EEPROM_PAGE_WRITE_BITS	3
 #define CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS	5
 
+/* DisplayPort */
+#define DP_PWD_EN_DEFAULT_MASK          0x8
+
 #ifdef CONFIG_SECURE_BOOT
 #include <asm/fsl_secure_boot.h>
 #endif