X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=arch%2Fpowerpc%2Fcpu%2Fmpc85xx%2Ffsl_corenet2_serdes.c;h=8edf5bb20ef79dc834c5ec5467f03f9cce21c155;hb=7cad2e38d61e27ea59fb7944f7e647e97ef292d3;hp=39d9409d64bab1442908e3ec8de64fb054aa3b52;hpb=a4c955bc3b23a38dc2c5c60b655a4d01eff93cec;p=u-boot

diff --git a/arch/powerpc/cpu/mpc85xx/fsl_corenet2_serdes.c b/arch/powerpc/cpu/mpc85xx/fsl_corenet2_serdes.c
index 39d9409d64..8edf5bb20e 100644
--- a/arch/powerpc/cpu/mpc85xx/fsl_corenet2_serdes.c
+++ b/arch/powerpc/cpu/mpc85xx/fsl_corenet2_serdes.c
@@ -75,6 +75,8 @@ static const char *serdes_prtcl_str[] = {
 	[XFI_FM2_MAC9] = "XFI_FM2_MAC9",
 	[XFI_FM2_MAC10] = "XFI_FM2_MAC10",
 	[INTERLAKEN] = "INTERLAKEN",
+	[QSGMII_SW1_A] = "QSGMII_SW1_A",
+	[QSGMII_SW1_B] = "QSGMII_SW1_B",
 };
 #endif
 
@@ -145,19 +147,162 @@ int serdes_get_first_lane(u32 sd, enum srds_prtcl device)
 	return -ENODEV;
 }
 
+#define BC3_SHIFT	9
+#define DC3_SHIFT	6
+#define FC3_SHIFT	0
+#define BC2_SHIFT	19
+#define DC2_SHIFT	16
+#define FC2_SHIFT	10
+#define BC1_SHIFT	29
+#define DC1_SHIFT	26
+#define FC1_SHIFT	20
+#define BC_MASK		0x1
+#define DC_MASK		0x7
+#define FC_MASK		0x3F
+
+#define FUSE_VAL_MASK		0x00000003
+#define FUSE_VAL_SHIFT		30
+#define CR0_DCBIAS_SHIFT	5
+#define CR1_FCAP_SHIFT		15
+#define CR1_BCAP_SHIFT		29
+#define FCAP_MASK		0x001F8000
+#define BCAP_MASK		0x20000000
+#define BCAP_OVD_MASK		0x10000000
+#define BYP_CAL_MASK		0x02000000
+
 u64 serdes_init(u32 sd, u32 sd_addr, u32 sd_prctl_mask, u32 sd_prctl_shift)
 {
 	ccsr_gur_t *gur = (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
 	u64 serdes_prtcl_map = 0;
 	u32 cfg;
 	int lane;
+#ifdef CONFIG_SYS_FSL_ERRATUM_A007186
+	struct ccsr_sfp_regs  __iomem *sfp_regs =
+			(struct ccsr_sfp_regs __iomem *)(CONFIG_SYS_SFP_ADDR);
+	u32 pll_num, pll_status, bc, dc, fc, pll_cr_upd, pll_cr0, pll_cr1;
+	u32 bc_status, fc_status, dc_status, pll_sr2;
+	serdes_corenet_t  __iomem *srds_regs = (void *)sd_addr;
+	u32 sfp_spfr0, sel;
+#endif
 
 	cfg = in_be32(&gur->rcwsr[4]) & sd_prctl_mask;
-	/* Is serdes enabled at all? */
-	if (!cfg) {
-		printf("SERDES%d is not enabled\n", sd + 1);
-		return 0;
+
+/* Erratum A-007186
+ * Freescale Scratch Pad Fuse Register n (SFP_FSPFR0)
+ * The workaround requires factory pre-set SerDes calibration values to be
+ * read from a fuse block(Freescale Scratch Pad Fuse Register SFP_FSPFR0)
+ * These values have been shown to work across the
+ * entire temperature range for all SerDes. These values are then written into
+ * the SerDes registers to calibrate the SerDes PLL.
+ *
+ * This workaround for the protocols and rates that only have the Ring VCO.
+ */
+#ifdef CONFIG_SYS_FSL_ERRATUM_A007186
+	sfp_spfr0 = in_be32(&sfp_regs->fsl_spfr0);
+	debug("A007186: sfp_spfr0= %x\n", sfp_spfr0);
+
+	sel = (sfp_spfr0 >> FUSE_VAL_SHIFT) & FUSE_VAL_MASK;
+
+	if (sel == 0x01 || sel == 0x02) {
+		for (pll_num = 0; pll_num < SRDS_MAX_BANK; pll_num++) {
+			pll_status = in_be32(&srds_regs->bank[pll_num].pllcr0);
+			debug("A007186: pll_num=%x pllcr0=%x\n",
+			      pll_num, pll_status);
+			/* STEP 1 */
+			/* Read factory pre-set SerDes calibration values
+			 * from fuse block(SFP scratch register-sfp_spfr0)
+			 */
+			switch (pll_status & SRDS_PLLCR0_FRATE_SEL_MASK) {
+			case SRDS_PLLCR0_FRATE_SEL_3_0:
+			case SRDS_PLLCR0_FRATE_SEL_3_072:
+				debug("A007186: 3.0/3.072 protocol rate\n");
+				bc = (sfp_spfr0 >> BC1_SHIFT) & BC_MASK;
+				dc = (sfp_spfr0 >> DC1_SHIFT) & DC_MASK;
+				fc = (sfp_spfr0 >> FC1_SHIFT) & FC_MASK;
+				break;
+			case SRDS_PLLCR0_FRATE_SEL_3_125:
+				debug("A007186: 3.125 protocol rate\n");
+				bc = (sfp_spfr0 >> BC2_SHIFT) & BC_MASK;
+				dc = (sfp_spfr0 >> DC2_SHIFT) & DC_MASK;
+				fc = (sfp_spfr0 >> FC2_SHIFT) & FC_MASK;
+				break;
+			case SRDS_PLLCR0_FRATE_SEL_3_75:
+				debug("A007186: 3.75 protocol rate\n");
+				bc = (sfp_spfr0 >> BC1_SHIFT) & BC_MASK;
+				dc = (sfp_spfr0 >> DC1_SHIFT) & DC_MASK;
+				fc = (sfp_spfr0 >> FC1_SHIFT) & FC_MASK;
+				break;
+			default:
+				continue;
+			}
+
+			/* STEP 2 */
+			/* Write SRDSxPLLnCR1[11:16] = FC
+			 * Write SRDSxPLLnCR1[2] = BC
+			 */
+			pll_cr1 = in_be32(&srds_regs->bank[pll_num].pllcr1);
+			pll_cr_upd = (((bc << CR1_BCAP_SHIFT) & BCAP_MASK) |
+				      ((fc << CR1_FCAP_SHIFT) & FCAP_MASK));
+			out_be32(&srds_regs->bank[pll_num].pllcr1,
+				 (pll_cr_upd | pll_cr1));
+			debug("A007186: pll_num=%x Updated PLLCR1=%x\n",
+			      pll_num, (pll_cr_upd | pll_cr1));
+			/* Write SRDSxPLLnCR0[24:26] = DC
+			 */
+			pll_cr0 = in_be32(&srds_regs->bank[pll_num].pllcr0);
+			out_be32(&srds_regs->bank[pll_num].pllcr0,
+				 pll_cr0 | (dc << CR0_DCBIAS_SHIFT));
+			debug("A007186: pll_num=%x, Updated PLLCR0=%x\n",
+			      pll_num, (pll_cr0 | (dc << CR0_DCBIAS_SHIFT)));
+			/* Write SRDSxPLLnCR1[3] = 1
+			 * Write SRDSxPLLnCR1[6] = 1
+			 */
+			pll_cr1 = in_be32(&srds_regs->bank[pll_num].pllcr1);
+			pll_cr_upd = (BCAP_OVD_MASK | BYP_CAL_MASK);
+			out_be32(&srds_regs->bank[pll_num].pllcr1,
+				 (pll_cr_upd | pll_cr1));
+			debug("A007186: pll_num=%x Updated PLLCR1=%x\n",
+			      pll_num, (pll_cr_upd | pll_cr1));
+
+			/* STEP 3 */
+			/* Read the status Registers */
+			/* Verify SRDSxPLLnSR2[8] = BC */
+			pll_sr2 = in_be32(&srds_regs->bank[pll_num].pllsr2);
+			debug("A007186: pll_num=%x pllsr2=%x\n",
+			      pll_num, pll_sr2);
+			bc_status = (pll_sr2 >> 23) & BC_MASK;
+			if (bc_status != bc)
+				debug("BC mismatch\n");
+			fc_status = (pll_sr2 >> 16) & FC_MASK;
+			if (fc_status != fc)
+				debug("FC mismatch\n");
+			pll_cr0 = in_be32(&srds_regs->bank[pll_num].pllcr0);
+			out_be32(&srds_regs->bank[pll_num].pllcr0, pll_cr0 |
+								0x02000000);
+			pll_sr2 = in_be32(&srds_regs->bank[pll_num].pllsr2);
+			dc_status = (pll_sr2 >> 17) & DC_MASK;
+			if (dc_status != dc)
+				debug("DC mismatch\n");
+			pll_cr0 = in_be32(&srds_regs->bank[pll_num].pllcr0);
+			out_be32(&srds_regs->bank[pll_num].pllcr0, pll_cr0 &
+								0xfdffffff);
+
+			/* STEP 4 */
+			/* Wait 750us to verify the PLL is locked
+			 * by checking SRDSxPLLnCR0[8] = 1.
+			 */
+			udelay(750);
+			pll_status = in_be32(&srds_regs->bank[pll_num].pllcr0);
+			debug("A007186: pll_num=%x pllcr0=%x\n",
+			      pll_num, pll_status);
+
+			if ((pll_status & SRDS_PLLCR0_PLL_LCK) == 0)
+				printf("A007186 Serdes PLL not locked\n");
+			else
+				debug("A007186 Serdes PLL locked\n");
+		}
 	}
+#endif
 
 	cfg >>= sd_prctl_shift;
 	printf("Using SERDES%d Protocol: %d (0x%x)\n", sd + 1, cfg, cfg);
@@ -201,3 +346,24 @@ void fsl_serdes_init(void)
 #endif
 
 }
+
+const char *serdes_clock_to_string(u32 clock)
+{
+	switch (clock) {
+	case SRDS_PLLCR0_RFCK_SEL_100:
+		return "100";
+	case SRDS_PLLCR0_RFCK_SEL_125:
+		return "125";
+	case SRDS_PLLCR0_RFCK_SEL_156_25:
+		return "156.25";
+	case SRDS_PLLCR0_RFCK_SEL_161_13:
+		return "161.1328123";
+	default:
+#if defined(CONFIG_T4240QDS)
+		return "???";
+#else
+		return "122.88";
+#endif
+	}
+}
+