[U-Boot] [PATCH v2] armv8: fsl-layerscape: LS1044A/1048A: enable Only 1x 10GE port

[Pramod Kumar]

LS1044A, LS1048A are LS1088A personalities, which support only one
1x 10GE port.
MAC1 and MAC2 are associated with 1G SGMII, 2.5G SGMII, and XFI.
Disable MAC1 to have only one 1x 10GE port for LS1044A, LS1048A.

Signed-off-by: Pramod Kumar <pramod.kumar_1 at nxp.com>
---
Changes for v2:
  - incorporated review comment's

 arch/arm/cpu/armv8/fsl-layerscape/ls1088a_serdes.c | 27 ++++++++++++++++++++--
 1 file changed, 25 insertions(+), 2 deletions(-)

diff --git a/arch/arm/cpu/armv8/fsl-layerscape/ls1088a_serdes.c b/arch/arm/cpu/armv8/fsl-layerscape/ls1088a_serdes.c
index 8e8b45a..7b465e1 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/ls1088a_serdes.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/ls1088a_serdes.c
@@ -1,10 +1,12 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
- * Copyright 2017 NXP
+ * Copyright 2017-2019 NXP
  */
 
 #include <common.h>
 #include <asm/arch/fsl_serdes.h>
+#include <asm/arch/soc.h>
+#include <asm/io.h>
 
 struct serdes_config {
 	u8 ip_protocol;
@@ -32,6 +34,7 @@ static struct serdes_config serdes1_cfg_tbl[] = {
 	{0x3A, {SGMII3, PCIE1, SGMII1, SGMII2 }, {3, 5, 3, 3 } },
 		{}
 };
+
 static struct serdes_config serdes2_cfg_tbl[] = {
 	/* SerDes 2 */
 	{0x0C, {PCIE1, PCIE1, PCIE1, PCIE1 }, {8, 8, 8, 8 } },
@@ -48,6 +51,19 @@ static struct serdes_config *serdes_cfg_tbl[] = {
 	serdes2_cfg_tbl,
 };
 
+bool soc_has_mac1(void)
+{
+	struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
+	unsigned int  svr, ver;
+
+	svr = gur_in32(&gur->svr);
+	ver = SVR_SOC_VER(svr);
+	if (ver == SVR_LS1088A)
+		return true;
+	else
+		return false;
+}
+
 int serdes_get_number(int serdes, int cfg)
 {
 	struct serdes_config *ptr;
@@ -87,7 +103,14 @@ enum srds_prtcl serdes_get_prtcl(int serdes, int cfg, int lane)
 
 	if (serdes >= ARRAY_SIZE(serdes_cfg_tbl))
 		return 0;
-
+	/*
+	 * LS1044A/1048A  support only one XFI port
+	 * Disable MAC1 for LS1044A/1048A
+	 */
+	if (!serdes && lane == 2) {
+		if (!soc_has_mac1())
+			return 0;
+	}
 	ptr = serdes_cfg_tbl[serdes];
 	while (ptr->ip_protocol) {
 		if (ptr->ip_protocol == cfg)
-- 
2.7.4