X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=arch%2Fpowerpc%2Fcpu%2Fmpc85xx%2Fp1023_serdes.c;h=482172d4e02002eddb0a6bd6b6a963240f9fa910;hb=c590e62d3b6f6dd72eae1183614f919e3fd7ffcb;hp=e83b0a3359834d42aae1e807e16725ff3930e3fb;hpb=5b9c79a81db80c3f9e50c77477957cd803429af8;p=oweals%2Fu-boot.git

diff --git a/arch/powerpc/cpu/mpc85xx/p1023_serdes.c b/arch/powerpc/cpu/mpc85xx/p1023_serdes.c
index e83b0a3359..482172d4e0 100644
--- a/arch/powerpc/cpu/mpc85xx/p1023_serdes.c
+++ b/arch/powerpc/cpu/mpc85xx/p1023_serdes.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2010-2011 Freescale Semiconductor, Inc.
  * Author: Roy Zang <tie-fei.zang@freescale.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <config.h>
@@ -24,7 +23,12 @@ static const u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
 
 int is_serdes_configured(enum srds_prtcl device)
 {
-	int ret = (1 << device) & serdes1_prtcl_map;
+	int ret;
+
+	if (!(serdes1_prtcl_map & (1 << NONE)))
+		fsl_serdes_init();
+
+	ret = (1 << device) & serdes1_prtcl_map;
 	return ret;
 }
 
@@ -36,6 +40,9 @@ void fsl_serdes_init(void)
 				MPC85xx_PORDEVSR_IO_SEL_SHIFT;
 	int lane;
 
+	if (serdes1_prtcl_map & (1 << NONE))
+		return;
+
 	debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
 
 	if (srds_cfg >= ARRAY_SIZE(serdes1_cfg_tbl)) {
@@ -47,4 +54,6 @@ void fsl_serdes_init(void)
 		serdes1_prtcl_map |= (1 << lane_prtcl);
 	}
 
+	/* Set the first bit to indicate serdes has been initialized */
+	serdes1_prtcl_map |= (1 << NONE);
 }