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ARM: 7003/1: vexpress: Add clock definition for the SP805. 

It seems that an entry for the SP805 watchdog in the table of clocks was
missing.  This results in the sp805_wdt driver rejecting the device with
the following errors:

  sp805-wdt mb:wdt: Clock not found
  sp805-wdt mb:wdt: Probe Failed!!!
  sp805-wdt: probe of mb:wdt failed with error -2

While not obviously stated in the hardware docs, the onboard SP810's
"REFCLK" is connected to a 32.768KHz crystal, and this drives the
watchdog.  Add a struct clk and corresponding lookup entry for it.

Signed-off-by: Nick Bowler <nbowler@elliptictech.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Nick Bowler 2011-07-20 15:43:42 +01:00 committed by Russell King
parent 0d6cfa3a75
commit 0ebb962e00
1 changed files with 7 additions and 0 deletions
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7
arch/arm/mach-vexpress/v2m.c
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@ -318,6 +318,10 @@ static struct clk v2m_sp804_clk = {
.rate = 1000000,
};
static struct clk v2m_ref_clk = {
.rate = 32768,
};
static struct clk dummy_apb_pclk;
static struct clk_lookup v2m_lookups[] = {
@ -348,6 +352,9 @@ static struct clk_lookup v2m_lookups[] = {
}, { /* CLCD */
.dev_id = "mb:clcd",
.clk = &osc1_clk,
}, { /* SP805 WDT */
.dev_id = "mb:wdt",
.clk = &v2m_ref_clk,
}, { /* SP804 timers */
.dev_id = "sp804",
.con_id = "v2m-timer0",