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Commit e0c44686 authored by Lee Jones's avatar Lee Jones Committed by Mark Brown
Browse files

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: default avatarLee Jones <lee.jones@linaro.org>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 422d765d

arch/arm/mach-ux500/board-mop500-regulators.c

+28 −0
Original line number Diff line number Diff line
@@ -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;

	}

}