Merge branch 'master' of git://git.denx.de/u-boot-i2c

[oweals/u-boot.git] / board / freescale / common / ngpixis.c

diff --git a/board/freescale/common/ngpixis.c b/board/freescale/common/ngpixis.c
index 765f0359bfb03abdbf7cb19ee83be27252518e09..0cb076acc41d88c3071871e504c3285baed33e58 100644 (file)
--- a/board/freescale/common/ngpixis.c
+++ b/board/freescale/common/ngpixis.c
@@ -2,10 +2,7 @@
  * Copyright 2010-2011 Freescale Semiconductor
  * Author: Timur Tabi <timur@freescale.com>
  *
- * 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.
+ * SPDX-License-Identifier:    GPL-2.0+
  *
  * This file provides support for the ngPIXIS, a board-specific FPGA used on
  * some Freescale reference boards.
@@ -156,9 +153,29 @@ static void pixis_dump_regs(void)
 }
 #endif
 
+void pixis_sysclk_set(unsigned long sysclk)
+{
+       unsigned long freq_word;
+       u8 sclk0, sclk1, sclk2;
+
+       freq_word = ics307_sysclk_calculator(sysclk);
+       sclk2 = freq_word & 0xff;
+       sclk1 = (freq_word >> 8) & 0xff;
+       sclk0 = (freq_word >> 16) & 0xff;
+
+       /* set SYSCLK enable bit */
+       PIXIS_WRITE(vcfgen0, 0x01);
+
+       /* SYSCLK to required frequency */
+       PIXIS_WRITE(sclk[0], sclk0);
+       PIXIS_WRITE(sclk[1], sclk1);
+       PIXIS_WRITE(sclk[2], sclk2);
+}
+
 int pixis_reset_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
        unsigned int i;
+       unsigned long sysclk;
        char *p_altbank = NULL;
 #ifdef DEBUG
        char *p_dump = NULL;
@@ -182,6 +199,12 @@ int pixis_reset_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
                        continue;
                }
 #endif
+               if (strcmp(argv[i], "sysclk") == 0) {
+                       sysclk = simple_strtoul(argv[i + 1], NULL, 0);
+                       i += 1;
+                       pixis_sysclk_set(sysclk);
+                       continue;
+               }
 
                unknown_param = argv[i];
        }
@@ -211,12 +234,17 @@ int pixis_reset_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
        return 0;
 }
 
-U_BOOT_CMD(
-       pixis_reset, CONFIG_SYS_MAXARGS, 1, pixis_reset_cmd,
-       "Reset the board using the FPGA sequencer",
+#ifdef CONFIG_SYS_LONGHELP
+static char pixis_help_text[] =
        "- hard reset to default bank\n"
        "pixis_reset altbank - reset to alternate bank\n"
 #ifdef DEBUG
        "pixis_reset dump - display the PIXIS registers\n"
 #endif
+       "pixis_reset sysclk <SYSCLK_freq> - reset with SYSCLK frequency(KHz)\n";
+#endif
+
+U_BOOT_CMD(
+       pixis_reset, CONFIG_SYS_MAXARGS, 1, pixis_reset_cmd,
+       "Reset the board using the FPGA sequencer", pixis_help_text
        );