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ARM: ux500: Setup external regulator supply #2 for HREF v20 boards 

v20 HREFs require non-standard configuration of EXT_SUPPLY2 to
function correctly (specific information is commented). Here we make
use of the recently added mechanism to adapt initialisation values
for such use-cases.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Lee Jones 2013-03-28 16:11:05 +00:00 committed by Mark Brown
parent 422d765d2c
commit e0c44686c3
1 changed files with 28 additions and 0 deletions
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28
arch/arm/mach-ux500/board-mop500-regulators.c
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@ -510,4 +510,32 @@ void mop500_regulator_init(void)
regulator->constraints.state_mem.disabled = 1;
regulator->constraints.state_standby.disabled = 1;
}
/*
* Handle AB8500_EXT_SUPPLY2 on HREFP_V20_V50 boards (do it for
* all HREFP_V20 boards)
*/
if (cpu_is_u8500v20()) {
/* VextSupply2RequestCtrl = HP/OFF depending on VxRequest */
ab8500_modify_reg_init(AB8500_REGUREQUESTCTRL3, 0x01, 0x01);
/* VextSupply2SysClkReq1HPValid = SysClkReq1 controlled */
ab8500_modify_reg_init(AB8500_REGUSYSCLKREQ1HPVALID2,
0x20, 0x20);
/* VextSupply2 = force HP at initialization */
ab8500_modify_reg_init(AB8500_EXTSUPPLYREGU, 0x0c, 0x04);
/* enable VextSupply2 during platform active */
regulator = &ab8500_ext_regulators[AB8500_EXT_SUPPLY2];
regulator->constraints.always_on = 1;
/* disable VextSupply2 in suspend */
regulator = &ab8500_ext_regulators[AB8500_EXT_SUPPLY2];
regulator->constraints.state_mem.disabled = 1;
regulator->constraints.state_standby.disabled = 1;
/* enable VextSupply2 HW control (used in suspend) */
regulator->driver_data = (void *)&ab8500_ext_supply2;
}
}