Merge tag 'u-boot-atmel-fixes-2020.07-a' of https://gitlab.denx.de/u-boot/custodians...

[oweals/u-boot.git] / arch / powerpc / cpu / mpc85xx / fsl_corenet_serdes.c

diff --git a/arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.c b/arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.c
index 7f466ac6a94f2cb38796544d298eb947300aec5a..f5126e2c8acfb5c2b215d8182de1d1070fab09e7 100644 (file)
--- a/arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.c
+++ b/arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.c
@@ -1,26 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2009-2011 Freescale Semiconductor, Inc.
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
  */
 
 #include <common.h>
+#include <env.h>
+#include <log.h>
+#include <time.h>
 #ifdef CONFIG_SYS_P4080_ERRATUM_SERDES8
 #include <hwconfig.h>
 #endif
@@ -29,7 +15,8 @@
 #include <asm/io.h>
 #include <asm/processor.h>
 #include <asm/fsl_law.h>
-#include <asm/errno.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
 #include "fsl_corenet_serdes.h"
 
 /*
@@ -92,7 +79,7 @@ static const struct {
        { 17, 163, FSL_SRDS_BANK_2 },
        { 18, 164, FSL_SRDS_BANK_2 },
        { 19, 165, FSL_SRDS_BANK_2 },
-#ifdef CONFIG_PPC_P4080
+#ifdef CONFIG_ARCH_P4080
        { 20, 170, FSL_SRDS_BANK_3 },
        { 21, 171, FSL_SRDS_BANK_3 },
        { 22, 172, FSL_SRDS_BANK_3 },
@@ -103,6 +90,10 @@ static const struct {
        { 22, 168, FSL_SRDS_BANK_3 },
        { 23, 169, FSL_SRDS_BANK_3 },
 #endif
+#if SRDS_MAX_BANK > 3
+       { 24, 175, FSL_SRDS_BANK_4 },
+       { 25, 176, FSL_SRDS_BANK_4 },
+#endif
 };
 
 int serdes_get_lane_idx(int lane)
@@ -148,6 +139,9 @@ int is_serdes_configured(enum srds_prtcl device)
        if (!(in_be32(&gur->rcwsr[5]) & FSL_CORENET_RCWSR5_SRDS_EN))
                return 0;
 
+       if (!(serdes_prtcl_map & (1 << NONE)))
+               fsl_serdes_init();
+
        return (1 << device) & serdes_prtcl_map;
 }
 
@@ -500,7 +494,7 @@ void fsl_serdes_init(void)
        ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
        int cfg;
        serdes_corenet_t *srds_regs;
-#ifdef CONFIG_PPC_P5040
+#ifdef CONFIG_ARCH_P5040
        serdes_corenet_t *srds2_regs;
 #endif
        int lane, bank, idx;
@@ -513,7 +507,7 @@ void fsl_serdes_init(void)
        size_t arglen;
 #endif
 #ifdef CONFIG_SYS_P4080_ERRATUM_SERDES_A001
-       int need_serdes_a001;   /* TRUE == need work-around for SERDES A001 */
+       int need_serdes_a001;   /* true == need work-around for SERDES A001 */
 #endif
 #ifdef CONFIG_SYS_P4080_ERRATUM_SERDES8
        char buffer[HWCONFIG_BUFFER_SIZE];
@@ -523,9 +517,11 @@ void fsl_serdes_init(void)
         * Extract hwconfig from environment since we have not properly setup
         * the environment but need it for ddr config params
         */
-       if (getenv_f("hwconfig", buffer, sizeof(buffer)) > 0)
+       if (env_get_f("hwconfig", buffer, sizeof(buffer)) > 0)
                buf = buffer;
 #endif
+       if (serdes_prtcl_map & (1 << NONE))
+               return;
 
        /* Is serdes enabled at all? */
        if (!(in_be32(&gur->rcwsr[5]) & FSL_CORENET_RCWSR5_SRDS_EN))
@@ -584,7 +580,7 @@ void fsl_serdes_init(void)
                }
        }
 
-#ifdef CONFIG_PPC_P5040
+#ifdef CONFIG_ARCH_P5040
        /*
         * Lanes on bank 4 on P5040 are commented-out, but for some SERDES
         * protocols, these lanes are routed to SATA.  We use serdes_prtcl_map
@@ -614,6 +610,9 @@ void fsl_serdes_init(void)
 
        soc_serdes_init();
 
+       /* Set the first bit to indicate serdes has been initialized */
+       serdes_prtcl_map |= (1 << NONE);
+
 #ifdef CONFIG_SYS_P4080_ERRATUM_SERDES8
        /*
         * Bank two uses the clock from bank three, so if bank two is enabled,
@@ -714,9 +713,13 @@ void fsl_serdes_init(void)
 
 #ifdef CONFIG_SYS_P4080_ERRATUM_SERDES9
                /*
-                * Set BnTTLCRy0[FLT_SEL] = 000011 and set BnTTLCRy0[17] = 1 for
-                * each of the SerDes lanes selected as SGMII, XAUI, SRIO, or
-                * AURORA before the device is initialized.
+                * Set BnTTLCRy0[FLT_SEL] = 011011 and set BnTTLCRy0[31] = 1
+                * for each of the SerDes lanes selected as SGMII, XAUI, SRIO,
+                * or AURORA before the device is initialized.
+                *
+                * Note that this part of the SERDES-9 work-around is
+                * redundant if the work-around for A-4580 has already been
+                * applied via PBI.
                 */
                switch (lane_prtcl) {
                case SGMII_FM1_DTSEC1:
@@ -733,10 +736,12 @@ void fsl_serdes_init(void)
                case SRIO1:
                case SRIO2:
                case AURORA:
-                       clrsetbits_be32(&srds_regs->lane[idx].ttlcr0,
-                                       SRDS_TTLCR0_FLT_SEL_MASK,
-                                       SRDS_TTLCR0_FLT_SEL_750PPM |
-                                       SRDS_TTLCR0_PM_DIS);
+                       out_be32(&srds_regs->lane[idx].ttlcr0,
+                                SRDS_TTLCR0_FLT_SEL_KFR_26 |
+                                SRDS_TTLCR0_FLT_SEL_KPH_28 |
+                                SRDS_TTLCR0_FLT_SEL_750PPM |
+                                SRDS_TTLCR0_FREQOVD_EN);
+                       break;
                default:
                        break;
                }
@@ -864,3 +869,20 @@ 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:
+               return "150";
+       }
+}
+