summaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
authorKumar Gala <galak@kernel.crashing.org>2010-07-11 12:41:46 -0500
committerKumar Gala <galak@kernel.crashing.org>2010-07-21 00:40:20 -0500
commit47ec10c5975f0ce8f4a748c7b76c45c0fb60c0ac (patch)
tree31dba9a9d0ba2c1b0149f5fab00c66f59326027c /arch
parentaf0250652a775799da656f74719bdefb45fda7d5 (diff)
downloadu-boot-imx-47ec10c5975f0ce8f4a748c7b76c45c0fb60c0ac.zip
u-boot-imx-47ec10c5975f0ce8f4a748c7b76c45c0fb60c0ac.tar.gz
u-boot-imx-47ec10c5975f0ce8f4a748c7b76c45c0fb60c0ac.tar.bz2
powerpc/85xx: Rework P1022 SERDES is_serdes_configured support
Move serdes init until after we are in ram so we can keep track of a global static protocal map for the particular serdes config we are in. This makes is_serdes_configured() much simplier and not constantly reading registers to determine if a given device is enabled based on the protocol. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/cpu/mpc85xx/p1022_serdes.c38
1 files changed, 27 insertions, 11 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/p1022_serdes.c b/arch/powerpc/cpu/mpc85xx/p1022_serdes.c
index 6b0fbf2..e4c9c22 100644
--- a/arch/powerpc/cpu/mpc85xx/p1022_serdes.c
+++ b/arch/powerpc/cpu/mpc85xx/p1022_serdes.c
@@ -17,6 +17,8 @@
#define SRDS1_MAX_LANES 4
#define SRDS2_MAX_LANES 2
+static u32 serdes1_prtcl_map, serdes2_prtcl_map;
+
static const u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
[0x00] = {NONE, NONE, NONE, NONE},
[0x01] = {NONE, NONE, NONE, NONE},
@@ -73,26 +75,40 @@ static const u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = {
int is_serdes_configured(enum srds_prtcl device)
{
+ int ret = (1 << device) & serdes1_prtcl_map;
+
+ if (ret)
+ return ret;
+
+ return (1 << device) & serdes2_prtcl_map;
+}
+
+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;
- unsigned int i;
+ int lane;
- debug("%s: dev = %d\n", __FUNCTION__, device);
- debug("PORDEVSR[IO_SEL] = 0x%x\n", srds_cfg);
+ debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
if (srds_cfg > ARRAY_SIZE(serdes1_cfg_tbl)) {
- printf("Invalid PORDEVSR[IO_SEL] = %d\n", srds_cfg);
- return 0;
+ 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);
}
- for (i = 0; i < SRDS1_MAX_LANES; i++) {
- if (serdes1_cfg_tbl[srds_cfg][i] == device)
- return 1;
- if (serdes2_cfg_tbl[srds_cfg][i] == device)
- return 1;
+ if (srds_cfg > ARRAY_SIZE(serdes2_cfg_tbl)) {
+ printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
+ return;
}
- return 0;
+ for (lane = 0; lane < SRDS2_MAX_LANES; lane++) {
+ enum srds_prtcl lane_prtcl = serdes2_cfg_tbl[srds_cfg][lane];
+ serdes2_prtcl_map |= (1 << lane_prtcl);
+ }
}