powerpc/p2041: configure the CPLD lane_mux according to RCW
Lane muxing on p2041 is controlled by a reg in CPLD, offset of this reg
is 0xc, CPLD supports SATA by default, we should re-configure the lane
muxing according to RCW, which indicates what SerDes protocol it is running.
Default lane muxing map is as below:
Lane G on bank1 routes to SGMII, controlled by bit 1 of the reg;
Lane A on bank2 routes to AURORA, controlled by bit 0 of the reg;
Lane C/D on bank2 routes to SATA0 and SATA1, controlled by bit 2
and bit 3 respectively.
Default value of these bits for lane muxing is '1', we should set or clear
these bits accoring to RCW.
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
diff --git a/board/freescale/p2041rdb/eth.c b/board/freescale/p2041rdb/eth.c
index 4b0d577..fec9777 100644
--- a/board/freescale/p2041rdb/eth.c
+++ b/board/freescale/p2041rdb/eth.c
@@ -136,6 +136,11 @@
}
#endif /* #ifdef CONFIG_FMAN_ENET */
+#define CPLD_LANE_A_SEL 0x1
+#define CPLD_LANE_G_SEL 0x2
+#define CPLD_LANE_C_SEL 0x4
+#define CPLD_LANE_D_SEL 0x8
+
int board_eth_init(bd_t *bis)
{
#ifdef CONFIG_FMAN_ENET
@@ -143,6 +148,10 @@
struct tgec_mdio_info tgec_mdio_info;
unsigned int i, slot;
int lane;
+ ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
+ int srds_prtcl = (in_be32(&gur->rcwsr[4]) &
+ FSL_CORENET_RCWSR4_SRDS_PRTCL) >> 26;
+ u8 mux = CPLD_READ(serdes_mux);
printf("Initializing Fman\n");
@@ -172,6 +181,36 @@
fm_info_set_phy_address(FM1_DTSEC2, CONFIG_SYS_FM1_DTSEC2_PHY_ADDR);
fm_info_set_phy_address(FM1_DTSEC3, CONFIG_SYS_FM1_DTSEC3_PHY_ADDR);
+ mux &= ~(CPLD_LANE_A_SEL | CPLD_LANE_C_SEL | CPLD_LANE_D_SEL);
+ switch (srds_prtcl) {
+ case 0x2:
+ case 0xf:
+ mux &= ~CPLD_LANE_G_SEL;
+ break;
+ case 0x5:
+ case 0x9:
+ case 0xa:
+ case 0x17:
+ mux |= CPLD_LANE_G_SEL;
+ break;
+ case 0x14:
+ mux = (mux & (~CPLD_LANE_G_SEL)) | CPLD_LANE_A_SEL;
+ break;
+ case 0x8:
+ case 0x16:
+ case 0x19:
+ case 0x1a:
+ mux |= CPLD_LANE_G_SEL | CPLD_LANE_C_SEL | CPLD_LANE_D_SEL;
+ break;
+ case 0x1c:
+ mux |= CPLD_LANE_G_SEL | CPLD_LANE_A_SEL;
+ break;
+ default:
+ printf("Fman:Unsupported SerDes Protocol 0x%02x\n", srds_prtcl);
+ break;
+ }
+ CPLD_WRITE(serdes_mux, mux);
+
for (i = FM1_DTSEC1; i < FM1_DTSEC1 + CONFIG_SYS_NUM_FM1_DTSEC; i++) {
int idx = i - FM1_DTSEC1;