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[U-Boot,2/8] armv7: Add workaround for USB erratum A-009798

Message ID 1493352245-41593-1-git-send-email-yinbo.zhu@nxp.com
State Changes Requested
Delegated to: Tom Rini
Headers show

Commit Message

Yinbo Zhu April 28, 2017, 4:04 a.m. UTC 
From: Suresh Gupta <suresh.gupta@freescale.com>

USB High Speed Squelch Threshold Adjustment
This patch is adding the erratum for LS1021.

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
---
 arch/arm/cpu/armv7/ls102xa/soc.c                  | 10 ++++++++++
 arch/arm/include/asm/arch-ls102xa/config.h        |  1 +
 arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h |  1 +
 3 files changed, 12 insertions(+)
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Patch

diff --git a/arch/arm/cpu/armv7/ls102xa/soc.c b/arch/arm/cpu/armv7/ls102xa/soc.c
index c54daee..2e64708 100644
--- a/arch/arm/cpu/armv7/ls102xa/soc.c
+++ b/arch/arm/cpu/armv7/ls102xa/soc.c
@@ -70,6 +70,15 @@  static void erratum_a009008(void)
 #endif /* CONFIG_SYS_FSL_ERRATUM_A009008 */
 }
 
+static void erratum_a009798(void)
+{
+#ifdef CONFIG_SYS_FSL_ERRATUM_A009798
+	u32 __iomem *scfg = (u32 __iomem *)SCFG_BASE;
+	u32 val = in_be32(scfg + SCFG_USB3PRM1CR / 4);
+	out_be32(scfg + SCFG_USB3PRM1CR / 4, val & USB_SQRXTUNE);
+#endif /* CONFIG_SYS_FSL_ERRATUM_A009798 */
+}
+
 void s_init(void)
 {
 }
@@ -158,6 +167,7 @@  int arch_soc_init(void)
 
 	/* Erratum */
 	erratum_a009008();
+	erratum_a009798();
 	return 0;
 }
 
diff --git a/arch/arm/include/asm/arch-ls102xa/config.h b/arch/arm/include/asm/arch-ls102xa/config.h
index 5b89f16..14d5de1 100644
--- a/arch/arm/include/asm/arch-ls102xa/config.h
+++ b/arch/arm/include/asm/arch-ls102xa/config.h
@@ -113,6 +113,7 @@ 
 #define CONFIG_SYS_FSL_ERRATUM_A008378
 #define CONFIG_SYS_FSL_ERRATUM_A009663
 #define CONFIG_SYS_FSL_ERRATUM_A009008
+#define CONFIG_SYS_FSL_ERRATUM_A009798
 #define CONFIG_SYS_FSL_ERRATUM_A009942
 #define CONFIG_SYS_FSL_MAX_NUM_OF_SEC		1
 #else
diff --git a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
index f474cfd..bfc92ee 100644
--- a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
+++ b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
@@ -175,6 +175,7 @@  struct ccsr_gur {
 #define SCFG_BASE                       0x01570000
 #define SCFG_USB3PRM1CR                 0x070
 #define USB_TXVREFTUNE                  0x9
+#define USB_SQRXTUNE                    0xFC7FFFFF
 
 
 /* Supplemental Configuration Unit */