serdes_prtcl_map[NONE] = 1;
}
+__weak int get_serdes_volt(void)
+{
+ return -1;
+}
+
+__weak int set_serdes_volt(int svdd)
+{
+ return -1;
+}
+
+#define LNAGCR0_RT_RSTB 0x00600000
+
+#define RSTCTL_RESET_MASK 0x000000E0
+
+#define RSTCTL_RSTREQ 0x80000000
+#define RSTCTL_RST_DONE 0x40000000
+#define RSTCTL_RSTERR 0x20000000
+
+#define RSTCTL_SDEN 0x00000020
+#define RSTCTL_SDRST_B 0x00000040
+#define RSTCTL_PLLRST_B 0x00000080
+
+#define TCALCR_CALRST_B 0x08000000
+
+struct serdes_prctl_info {
+ u32 id;
+ u32 mask;
+ u32 shift;
+};
+
+struct serdes_prctl_info srds_prctl_info[] = {
+#ifdef CONFIG_SYS_FSL_SRDS_1
+ {.id = 1,
+ .mask = FSL_CHASSIS3_SRDS1_PRTCL_MASK,
+ .shift = FSL_CHASSIS3_SRDS1_PRTCL_SHIFT
+ },
+
+#endif
+#ifdef CONFIG_SYS_FSL_SRDS_2
+ {.id = 2,
+ .mask = FSL_CHASSIS3_SRDS2_PRTCL_MASK,
+ .shift = FSL_CHASSIS3_SRDS2_PRTCL_SHIFT
+ },
+#endif
+ {} /* NULL ENTRY */
+};
+
+static int get_serdes_prctl_info_idx(u32 serdes_id)
+{
+ int pos = 0;
+ struct serdes_prctl_info *srds_info;
+
+ /* loop until NULL ENTRY defined by .id=0 */
+ for (srds_info = srds_prctl_info; srds_info->id != 0;
+ srds_info++, pos++) {
+ if (srds_info->id == serdes_id)
+ return pos;
+ }
+
+ return -1;
+}
+
+static void do_enabled_lanes_reset(u32 serdes_id, u32 cfg,
+ struct ccsr_serdes __iomem *serdes_base,
+ bool cmplt)
+{
+ int i, pos;
+ u32 cfg_tmp;
+
+ pos = get_serdes_prctl_info_idx(serdes_id);
+ if (pos == -1) {
+ printf("invalid serdes_id %d\n", serdes_id);
+ return;
+ }
+
+ cfg_tmp = cfg & srds_prctl_info[pos].mask;
+ cfg_tmp >>= srds_prctl_info[pos].shift;
+
+ for (i = 0; i < 4 && cfg_tmp & (0xf << (3 - i)); i++) {
+ if (cmplt)
+ setbits_le32(&serdes_base->lane[i].gcr0,
+ LNAGCR0_RT_RSTB);
+ else
+ clrbits_le32(&serdes_base->lane[i].gcr0,
+ LNAGCR0_RT_RSTB);
+ }
+}
+
+static void do_pll_reset(u32 cfg,
+ struct ccsr_serdes __iomem *serdes_base)
+{
+ int i;
+
+ for (i = 0; i < 2 && !(cfg & (0x1 << (1 - i))); i++) {
+ clrbits_le32(&serdes_base->bank[i].rstctl,
+ RSTCTL_RESET_MASK);
+ udelay(1);
+
+ setbits_le32(&serdes_base->bank[i].rstctl,
+ RSTCTL_RSTREQ);
+ }
+ udelay(1);
+}
+
+static void do_rx_tx_cal_reset(struct ccsr_serdes __iomem *serdes_base)
+{
+ clrbits_le32(&serdes_base->srdstcalcr, TCALCR_CALRST_B);
+ clrbits_le32(&serdes_base->srdstcalcr, TCALCR_CALRST_B);
+}
+
+static void do_rx_tx_cal_reset_comp(u32 cfg, int i,
+ struct ccsr_serdes __iomem *serdes_base)
+{
+ if (!(cfg == 0x3 && i == 1)) {
+ udelay(1);
+ setbits_le32(&serdes_base->srdstcalcr, TCALCR_CALRST_B);
+ setbits_le32(&serdes_base->srdstcalcr, TCALCR_CALRST_B);
+ }
+ udelay(1);
+}
+
+static void do_pll_reset_done(u32 cfg,
+ struct ccsr_serdes __iomem *serdes_base)
+{
+ int i;
+ u32 reg = 0;
+
+ for (i = 0; i < 2; i++) {
+ reg = in_le32(&serdes_base->bank[i].pllcr0);
+ if (!(cfg & (0x1 << (1 - i))) && ((reg >> 23) & 0x1)) {
+ setbits_le32(&serdes_base->bank[i].rstctl,
+ RSTCTL_RST_DONE);
+ }
+ }
+}
+
+static void do_serdes_enable(u32 cfg,
+ struct ccsr_serdes __iomem *serdes_base)
+{
+ int i;
+
+ for (i = 0; i < 2 && !(cfg & (0x1 << (1 - i))); i++) {
+ setbits_le32(&serdes_base->bank[i].rstctl, RSTCTL_SDEN);
+ udelay(1);
+
+ setbits_le32(&serdes_base->bank[i].rstctl, RSTCTL_PLLRST_B);
+ udelay(1);
+ /* Take the Rx/Tx calibration out of reset */
+ do_rx_tx_cal_reset_comp(cfg, i, serdes_base);
+ }
+}
+
+static void do_pll_lock(u32 cfg,
+ struct ccsr_serdes __iomem *serdes_base)
+{
+ int i;
+ u32 reg = 0;
+
+ for (i = 0; i < 2 && !(cfg & (0x1 << (1 - i))); i++) {
+ /* if the PLL is not locked, set RST_ERR */
+ reg = in_le32(&serdes_base->bank[i].pllcr0);
+ if (!((reg >> 23) & 0x1)) {
+ setbits_le32(&serdes_base->bank[i].rstctl,
+ RSTCTL_RSTERR);
+ } else {
+ udelay(1);
+ setbits_le32(&serdes_base->bank[i].rstctl,
+ RSTCTL_SDRST_B);
+ udelay(1);
+ }
+ }
+}
+
+int setup_serdes_volt(u32 svdd)
+{
+ struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
+ struct ccsr_serdes __iomem *serdes1_base =
+ (void *)CONFIG_SYS_FSL_LSCH3_SERDES_ADDR;
+ u32 cfg_rcwsrds1 = gur_in32(&gur->rcwsr[FSL_CHASSIS3_SRDS1_REGSR - 1]);
+#ifdef CONFIG_SYS_FSL_SRDS_2
+ struct ccsr_serdes __iomem *serdes2_base =
+ (void *)(CONFIG_SYS_FSL_LSCH3_SERDES_ADDR + 0x10000);
+ u32 cfg_rcwsrds2 = gur_in32(&gur->rcwsr[FSL_CHASSIS3_SRDS2_REGSR - 1]);
+#endif
+ u32 cfg_tmp;
+ int svdd_cur, svdd_tar;
+ int ret = 1;
+
+ /* Only support switch SVDD to 900mV */
+ if (svdd != 900)
+ return -EINVAL;
+
+ /* Scale up to the LTC resolution is 1/4096V */
+ svdd = (svdd * 4096) / 1000;
+
+ svdd_tar = svdd;
+ svdd_cur = get_serdes_volt();
+ if (svdd_cur < 0)
+ return -EINVAL;
+
+ debug("%s: current SVDD: %x; target SVDD: %x\n",
+ __func__, svdd_cur, svdd_tar);
+ if (svdd_cur == svdd_tar)
+ return 0;
+
+ /* Put the all enabled lanes in reset */
+#ifdef CONFIG_SYS_FSL_SRDS_1
+ do_enabled_lanes_reset(1, cfg_rcwsrds1, serdes1_base, false);
+#endif
+
+#ifdef CONFIG_SYS_FSL_SRDS_2
+ do_enabled_lanes_reset(2, cfg_rcwsrds2, serdes2_base, false);
+#endif
+
+ /* Put the all enabled PLL in reset */
+#ifdef CONFIG_SYS_FSL_SRDS_1
+ cfg_tmp = cfg_rcwsrds1 & 0x3;
+ do_pll_reset(cfg_tmp, serdes1_base);
+#endif
+
+#ifdef CONFIG_SYS_FSL_SRDS_2
+ cfg_tmp = cfg_rcwsrds1 & 0xC;
+ cfg_tmp >>= 2;
+ do_pll_reset(cfg_tmp, serdes2_base);
+#endif
+
+ /* Put the Rx/Tx calibration into reset */
+#ifdef CONFIG_SYS_FSL_SRDS_1
+ do_rx_tx_cal_reset(serdes1_base);
+#endif
+
+#ifdef CONFIG_SYS_FSL_SRDS_2
+ do_rx_tx_cal_reset(serdes2_base);
+#endif
+
+ ret = set_serdes_volt(svdd);
+ if (ret < 0) {
+ printf("could not change SVDD\n");
+ ret = -1;
+ }
+
+ /* For each PLL that’s not disabled via RCW enable the SERDES */
+#ifdef CONFIG_SYS_FSL_SRDS_1
+ cfg_tmp = cfg_rcwsrds1 & 0x3;
+ do_serdes_enable(cfg_tmp, serdes1_base);
+#endif
+#ifdef CONFIG_SYS_FSL_SRDS_2
+ cfg_tmp = cfg_rcwsrds1 & 0xC;
+ cfg_tmp >>= 2;
+ do_serdes_enable(cfg_tmp, serdes2_base);
+#endif
+
+ /* Wait for at at least 625us, ensure the PLLs being reset are locked */
+ udelay(800);
+
+#ifdef CONFIG_SYS_FSL_SRDS_1
+ cfg_tmp = cfg_rcwsrds1 & 0x3;
+ do_pll_lock(cfg_tmp, serdes1_base);
+#endif
+
+#ifdef CONFIG_SYS_FSL_SRDS_2
+ cfg_tmp = cfg_rcwsrds1 & 0xC;
+ cfg_tmp >>= 2;
+ do_pll_lock(cfg_tmp, serdes2_base);
+#endif
+ /* Take the all enabled lanes out of reset */
+#ifdef CONFIG_SYS_FSL_SRDS_1
+ do_enabled_lanes_reset(1, cfg_rcwsrds1, serdes1_base, true);
+#endif
+#ifdef CONFIG_SYS_FSL_SRDS_2
+ do_enabled_lanes_reset(2, cfg_rcwsrds2, serdes2_base, true);
+#endif
+
+ /* For each PLL being reset, and achieved PLL lock set RST_DONE */
+#ifdef CONFIG_SYS_FSL_SRDS_1
+ cfg_tmp = cfg_rcwsrds1 & 0x3;
+ do_pll_reset_done(cfg_tmp, serdes1_base);
+#endif
+#ifdef CONFIG_SYS_FSL_SRDS_2
+ cfg_tmp = cfg_rcwsrds1 & 0xC;
+ cfg_tmp >>= 2;
+ do_pll_reset_done(cfg_tmp, serdes2_base);
+#endif
+
+ return ret;
+}
+
void fsl_serdes_init(void)
{
#if defined(CONFIG_FSL_MC_ENET) && !defined(CONFIG_SPL_BUILD)
projects / oweals / u-boot.git / blobdiff