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Commit 0ebb962e authored by Nick Bowler's avatar Nick Bowler Committed by Russell King
Browse files

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: default avatarNick Bowler <nbowler@elliptictech.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 0d6cfa3a

arch/arm/mach-vexpress/v2m.c

+7 −0
Original line number Diff line number Diff line
@@ -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",