smaug: Set LDO2 voltage to 1.8V
LDO2 regulator is used as an always-on reference for the droop alert circuit. Set output voltage to match kernel settings. CQ-DEPEND=CL:284649 BUG=chrome-os-partner:42305 BRANCH=None TEST=Compiles successfully and boots to kernel prompt Change-Id: I5ef4e266d8ec278dadffa846af8dc49b6d18c37e Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 611465f6248cba0ddce0083b431cb7ee17bc4b4c Original-Change-Id: I58cc473452b871392d813387707a0b8288e46561 Original-Signed-off-by: Furquan Shaikh <furquan@google.com> Original-Reviewed-on: https://chromium-review.googlesource.com/284879 Original-Tested-by: Furquan Shaikh <furquan@chromium.org> Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org> Original-Trybot-Ready: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/10900 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins)
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@ -95,6 +95,13 @@ void pmic_init(unsigned bus)
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pmic_write_reg_77620(bus, MAX77620_CNFG2SD_REG, 0x04, 1);
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pmic_write_reg_77620(bus, MAX77620_SD1_REG, 0x2a, 1);
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/*
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* MAX77620: Set LDO2 output to 1.8V. LDO2 is used as always-on
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* reference for the droop alert circuit. Match this setting with what
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* the kernel expects.
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*/
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pmic_write_reg_77620(bus, MAX77620_CNFG1_L2_REG, 0x14, 1);
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/* MAX77621: Set VOUT_REG to 1.0V - CPU VREG */
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pmic_write_reg_77621(bus, MAX77621_VOUT_REG, 0xBF, 1);
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