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sh: urquell: Handle EXTAL configuration here, too.

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urquell happens to use the same mode pins and EXTAL configuration as
SDK7786, so just copy it over.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2010-01-19 20:09:28 +09:00
parent c809821827
commit dea3cf1c39
1 changed files with 24 additions and 1 deletions
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25
arch/sh/boards/board-urquell.c
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@ -2,7 +2,7 @@
* Renesas Technology Corp. SH7786 Urquell Support. * Renesas Technology Corp. SH7786 Urquell Support.
* *
* Copyright (C) 2008 Kuninori Morimoto <morimoto.kuninori@renesas.com> * Copyright (C) 2008 Kuninori Morimoto <morimoto.kuninori@renesas.com>
* Copyright (C) 2009 Paul Mundt * Copyright (C) 2009, 2010 Paul Mundt
* *
* Based on board-sh7785lcr.c * Based on board-sh7785lcr.c
* Copyright (C) 2008 Yoshihiro Shimoda * Copyright (C) 2008 Yoshihiro Shimoda
@ -19,6 +19,7 @@
#include <linux/delay.h> #include <linux/delay.h>
#include <linux/gpio.h> #include <linux/gpio.h>
#include <linux/irq.h> #include <linux/irq.h>
#include <linux/clk.h>
#include <mach/urquell.h> #include <mach/urquell.h>
#include <cpu/sh7786.h> #include <cpu/sh7786.h>
#include <asm/heartbeat.h> #include <asm/heartbeat.h>
@ -175,6 +176,27 @@ static int urquell_mode_pins(void)
return __raw_readw(UBOARDREG(MDSWMR)); return __raw_readw(UBOARDREG(MDSWMR));
} }
static int urquell_clk_init(void)
{
struct clk *clk;
int ret;
/*
* Only handle the EXTAL case, anyone interfacing a crystal
* resonator will need to provide their own input clock.
*/
if (test_mode_pin(MODE_PIN9))
return -EINVAL;
clk = clk_get(NULL, "extal");
if (!clk || IS_ERR(clk))
return PTR_ERR(clk);
ret = clk_set_rate(clk, 33333333);
clk_put(clk);
return ret;
}
/* Initialize the board */ /* Initialize the board */
static void __init urquell_setup(char **cmdline_p) static void __init urquell_setup(char **cmdline_p)
{ {
@ -191,4 +213,5 @@ static struct sh_machine_vector mv_urquell __initmv = {
.mv_setup = urquell_setup, .mv_setup = urquell_setup,
.mv_init_irq = urquell_init_irq, .mv_init_irq = urquell_init_irq,
.mv_mode_pins = urquell_mode_pins, .mv_mode_pins = urquell_mode_pins,
.mv_clk_init = urquell_clk_init,
}; };