X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=arch%2Fpowerpc%2Fcpu%2Fmpc85xx%2Fmpc8536_serdes.c;h=c4c4154ac37049776247934d7e2cffca4e8b346c;hb=9a0cbae22a613dfd55e15565785749b74c19fdf0;hp=ec96e81ed5ecf5c5c35b00e3dd5b8be485230724;hpb=f9c1456cf632175afb7d6b27f42f1aab8432be0f;p=oweals%2Fu-boot.git

diff --git a/arch/powerpc/cpu/mpc85xx/mpc8536_serdes.c b/arch/powerpc/cpu/mpc85xx/mpc8536_serdes.c
index ec96e81ed5..c4c4154ac3 100644
--- a/arch/powerpc/cpu/mpc85xx/mpc8536_serdes.c
+++ b/arch/powerpc/cpu/mpc85xx/mpc8536_serdes.c
@@ -1,24 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2008,2010 Freescale Semiconductor, Inc.
  *	Dave Liu <daveliu@freescale.com>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
  */
 
 #include <config.h>
@@ -87,11 +70,19 @@ static u8 serdes2_cfg_tbl[][SRDS2_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;
 
 	if (ret)
 		return ret;
 
+	if (!(serdes2_prtcl_map & (1 << NONE)))
+		fsl_serdes_init();
+
 	return (1 << device) & serdes2_prtcl_map;
 }
 
@@ -104,6 +95,10 @@ void fsl_serdes_init(void)
 	u32 tmp;
 	int lane;
 
+	if (serdes1_prtcl_map & (1 << NONE) &&
+	    serdes2_prtcl_map & (1 << NONE))
+		return;
+
 	srds1_io_sel = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
 				MPC85xx_PORDEVSR_IO_SEL_SHIFT;
 
@@ -237,6 +232,9 @@ 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);
+
 	if (srds2_io_sel >= ARRAY_SIZE(serdes2_cfg_tbl)) {
 		printf("Invalid PORDEVSR[SRDS2_IO_SEL] = %d\n", srds2_io_sel);
 		return;
@@ -246,4 +244,7 @@ void fsl_serdes_init(void)
 		enum srds_prtcl lane_prtcl = serdes2_cfg_tbl[srds2_io_sel][lane];
 		serdes2_prtcl_map |= (1 << lane_prtcl);
 	}
+
+	/* Set the first bit to indicate serdes has been initialized */
+	serdes2_prtcl_map |= (1 << NONE);
 }