From: Alexey Galakhov <agalakhov@gmail.com>
To: barebox@lists.infradead.org
Cc: Alexey Galakhov <agalakhov@gmail.com>
Subject: [PATCH 6/9] S5P lowlevel clock init
Date: Sun, 13 May 2012 18:40:03 +0600 [thread overview]
Message-ID: <1336912806-4163-7-git-send-email-agalakhov@gmail.com> (raw)
In-Reply-To: <1336912806-4163-1-git-send-email-agalakhov@gmail.com>
Signed-off-by: Alexey Galakhov <agalakhov@gmail.com>
---
arch/arm/boards/tiny210/config.h | 13 +++++
arch/arm/boards/tiny210/lowlevel.c | 4 +-
arch/arm/mach-samsung/Makefile | 1 +
arch/arm/mach-samsung/include/mach/s3c-generic.h | 1 +
arch/arm/mach-samsung/lowlevel-s5pcxx.c | 61 ++++++++++++++++++++++
5 files changed, 79 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/mach-samsung/lowlevel-s5pcxx.c
diff --git a/arch/arm/boards/tiny210/config.h b/arch/arm/boards/tiny210/config.h
index 83cb0b4..36f0601 100644
--- a/arch/arm/boards/tiny210/config.h
+++ b/arch/arm/boards/tiny210/config.h
@@ -8,3 +8,16 @@
#define DMC_TIMING_ROW 0x2B34438A
#define DMC_TIMING_DATA 0x24240000
#define DMC_TIMING_PWR 0x0BDC0343
+
+#define set_pll(mdiv, pdiv, sdiv) (1<<31 | mdiv<<16 | pdiv<<8 | sdiv)
+
+#define BOARD_APLL_VAL set_pll(0x7d, 0x3, 0x1)
+#define BOARD_MPLL_VAL set_pll(0x29b, 0xc, 0x1)
+#define BOARD_EPLL_VAL set_pll(0x60, 0x6, 0x2)
+#define BOARD_VPLL_VAL set_pll(0x6c, 0x6, 0x3)
+
+#define BOARD_CLK_DIV0_MASK 0xFFFFFFFF
+#define BOARD_CLK_DIV0_VAL 0x14131440
+#define BOARD_APLL_LOCKTIME 0x2cf
+
+
diff --git a/arch/arm/boards/tiny210/lowlevel.c b/arch/arm/boards/tiny210/lowlevel.c
index dcf4091..344be6a 100644
--- a/arch/arm/boards/tiny210/lowlevel.c
+++ b/arch/arm/boards/tiny210/lowlevel.c
@@ -32,7 +32,9 @@ void __bare_init board_init_lowlevel(void)
{
unsigned r;
- /* TODO: initialize PLL here */
+#ifdef CONFIG_S3C_PLL_INIT
+ s5p_init_pll();
+#endif
if (get_pc() < 0xD0000000) /* Are we running from iRAM? */
return; /* No, we don't. */
diff --git a/arch/arm/mach-samsung/Makefile b/arch/arm/mach-samsung/Makefile
index ac59d7b..becf2a7 100644
--- a/arch/arm/mach-samsung/Makefile
+++ b/arch/arm/mach-samsung/Makefile
@@ -1,5 +1,6 @@
obj-y += s3c-timer.o generic.o
obj-lowlevel-$(CONFIG_ARCH_S3C24xx) += lowlevel-s3c24x0.o
+obj-lowlevel-$(CONFIG_ARCH_S5PCxx) += lowlevel-s5pcxx.o
obj-$(CONFIG_ARCH_S3C24xx) += gpio-s3c24x0.o clocks-s3c24x0.o mem-s3c24x0.o
obj-$(CONFIG_ARCH_S5PCxx) += gpio-s5pcxx.o clocks-s5pcxx.o mem-s5pcxx.o
obj-$(CONFIG_ARCH_S5PCxx) += s5p-irom-boot.o
diff --git a/arch/arm/mach-samsung/include/mach/s3c-generic.h b/arch/arm/mach-samsung/include/mach/s3c-generic.h
index 381ad7b..53bb95d 100644
--- a/arch/arm/mach-samsung/include/mach/s3c-generic.h
+++ b/arch/arm/mach-samsung/include/mach/s3c-generic.h
@@ -40,6 +40,7 @@ void s3c24xx_disable_second_sdram_bank(void);
#endif
#ifdef CONFIG_ARCH_S5PCxx
+void s5p_init_pll(void);
void s5p_init_dram_bank(uint32_t base, uint32_t mc0, uint32_t mc1);
int s5p_irom_mmc_load(void *dest, uint32_t start_block, uint16_t block_count);
#endif
diff --git a/arch/arm/mach-samsung/lowlevel-s5pcxx.c b/arch/arm/mach-samsung/lowlevel-s5pcxx.c
new file mode 100644
index 0000000..15afa47
--- /dev/null
+++ b/arch/arm/mach-samsung/lowlevel-s5pcxx.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2012 Alexey Galakhov
+ *
+ * Based on code from u-boot found somewhere on the web
+ * that seems to originate from Samsung
+ *
+ * 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.
+ */
+
+#include <config.h>
+#include <common.h>
+#include <io.h>
+#include <init.h>
+#include <mach/s3c-iomap.h>
+#include <mach/s3c-clocks.h>
+#include <mach/s3c-generic.h>
+
+#ifdef CONFIG_S3C_PLL_INIT
+void __bare_init s5p_init_pll(void)
+{
+ uint32_t reg;
+ int i;
+
+ /* Set Mux to FIN */
+ writel(0, S5P_CLK_SRC0);
+
+ writel(BOARD_APLL_LOCKTIME, S5P_xPLL_LOCK + S5P_APLL);
+
+ /* Disable PLL */
+ writel(0, S5P_xPLL_CON + S5P_APLL);
+ writel(0, S5P_xPLL_CON + S5P_MPLL);
+
+ /* Set up dividers */
+ reg = readl(S5P_CLK_DIV0);
+ reg &= ~(BOARD_CLK_DIV0_MASK);
+ reg |= (BOARD_CLK_DIV0_VAL);
+ writel(reg, S5P_CLK_DIV0);
+
+ /* Set up PLLs */
+ writel(BOARD_APLL_VAL, S5P_xPLL_CON + S5P_APLL);
+ writel(BOARD_MPLL_VAL, S5P_xPLL_CON + S5P_MPLL);
+ writel(BOARD_EPLL_VAL, S5P_xPLL_CON + S5P_EPLL);
+ writel(BOARD_VPLL_VAL, S5P_xPLL_CON + S5P_VPLL);
+
+ /* Wait for sync */
+ for (i = 0; i < 0x10000; ++i)
+ barrier();
+
+ reg = readl(S5P_CLK_SRC0);
+ reg |= 0x1111; /* switch MUX to PLL outputs */
+ writel(reg, S5P_CLK_SRC0);
+}
+#endif /* CONFIG_S3C_PLL_INIT */
--
1.7.10
_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox
next prev parent reply other threads:[~2012-05-13 12:41 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-12 16:23 [Pull request] Minimal S5PV210 support Alexey Galakhov
2012-05-13 9:09 ` Sascha Hauer
2012-05-13 12:39 ` [PATCH 0/9] " Alexey Galakhov
2012-05-13 12:39 ` [PATCH 1/9] Support most Samsung SoCs in S3C serial driver Alexey Galakhov
2012-05-13 12:39 ` [PATCH 2/9] Fine split S3C arch dependencies from generic code Alexey Galakhov
2012-05-14 8:03 ` Juergen Beisert
2012-05-14 8:54 ` Alexey Galakhov
2012-05-14 8:57 ` Sascha Hauer
2012-05-14 8:59 ` Alexey Galakhov
2012-05-14 9:00 ` Juergen Beisert
2012-05-14 9:30 ` Alexey Galakhov
2012-05-14 8:12 ` Sascha Hauer
2012-05-13 12:40 ` [PATCH 3/9] Minimal S5PV210 + Tiny210 support (2nd stage only) Alexey Galakhov
2012-05-14 8:13 ` Juergen Beisert
2012-05-14 8:57 ` Alexey Galakhov
2012-05-14 9:04 ` Juergen Beisert
[not found] ` <4FB0D058.3070206@gmail.com>
2012-05-14 9:57 ` Juergen Beisert
2012-05-14 11:07 ` Alexey Galakhov
2012-05-14 13:07 ` Juergen Beisert
2012-05-14 13:38 ` Alexey Galakhov
2012-05-13 12:40 ` [PATCH 4/9] S5PV210 iROM magic boot code Alexey Galakhov
2012-05-14 7:51 ` Sascha Hauer
2012-05-14 8:55 ` Alexey Galakhov
2012-05-13 12:40 ` [PATCH 5/9] S5P DRAM support Alexey Galakhov
2012-05-13 12:40 ` Alexey Galakhov [this message]
2012-05-13 12:40 ` [PATCH 7/9] Revert "S5PV210 iROM magic boot code" Alexey Galakhov
2012-05-13 12:40 ` [PATCH 8/9] S5P iROM boot support - improved Alexey Galakhov
2012-05-13 12:40 ` [PATCH 9/9] S5P boot header and image generator Alexey Galakhov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1336912806-4163-7-git-send-email-agalakhov@gmail.com \
--to=agalakhov@gmail.com \
--cc=barebox@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox