summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/cpu/mpc85xx/p1023_serdes.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/cpu/mpc85xx/p1023_serdes.c')
-rw-r--r--arch/powerpc/cpu/mpc85xx/p1023_serdes.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/p1023_serdes.c b/arch/powerpc/cpu/mpc85xx/p1023_serdes.c
new file mode 100644
index 0000000..0b4ae90
--- /dev/null
+++ b/arch/powerpc/cpu/mpc85xx/p1023_serdes.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2010-2011 Freescale Semiconductor, Inc.
+ * Author: Roy Zang <tie-fei.zang@freescale.com>
+ *
+ * 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.
+ */
+
+#include <config.h>
+#include <common.h>
+#include <asm/io.h>
+#include <asm/immap_85xx.h>
+#include <asm/fsl_serdes.h>
+
+#define SRDS1_MAX_LANES 4
+
+static u32 serdes1_prtcl_map;
+
+static const u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
+ [0x00] = {PCIE1, PCIE2, NONE, NONE},
+ [0x01] = {PCIE1, PCIE2, PCIE3, NONE},
+ [0x02] = {PCIE1, PCIE2, PCIE3, SGMII_FM1_DTSEC2},
+ [0x03] = {PCIE1, PCIE2, SGMII_FM1_DTSEC1, SGMII_FM1_DTSEC2},
+};
+
+int is_serdes_configured(enum srds_prtcl device)
+{
+ int ret = (1 << device) & serdes1_prtcl_map;
+ return ret;
+}
+
+void fsl_serdes_init(void)
+{
+ ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
+ u32 pordevsr = in_be32(&gur->pordevsr);
+ u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
+ MPC85xx_PORDEVSR_IO_SEL_SHIFT;
+ int lane;
+
+ debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
+
+ if (srds_cfg >= ARRAY_SIZE(serdes1_cfg_tbl)) {
+ printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
+ return;
+ }
+ for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
+ enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane];
+ serdes1_prtcl_map |= (1 << lane_prtcl);
+ }
+
+}
OpenPOWER on IntegriCloud