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Commit c2013861 authored by David Collins's avatar David Collins
Browse files

regulator: cpr3-hmss-regulator: add support for msm8996pro differences 



The lower Turbo fuse corner reference voltage for speed bin 1
with CPR revision >= 5 only applies to MSM8996v3 chips.  It
should not be used on MSM8996-Pro chips.  Therefore, add support
to distinguish MSM8996v3 from MSM8996-Pro and add a V3 check
to the reference voltage selection logic.

Change-Id: Iae7d49fe1b2539727160649cbf60ce57b73d639e
Signed-off-by: default avatarDavid Collins <collinsd@codeaurora.org>
parent 804a2a69

Documentation/devicetree/bindings/regulator/cpr3-hmss-regulator.txt

+3 −2
Original line number Diff line number Diff line
@@ -40,9 +40,10 @@ HMSS specific properties: 
		    "qcom,cpr3-msm8996-v1-hmss-regulator",

		    "qcom,cpr3-msm8996-v2-hmss-regulator",

		    "qcom,cpr3-msm8996-v3-hmss-regulator",

		    "qcom,cpr3-msm8996-hmss-regulator".

		    "qcom,cpr3-msm8996-hmss-regulator",

		    "qcom,cpr3-msm8996pro-hmss-regulator".

		    If the SoC revision is not specified, then it is assumed to

		    be the most recent revision, i.e. v3.

		    be the most recent revision of MSM8996, i.e. v3.



- interrupts

	Usage:      required

drivers/regulator/cpr3-hmss-regulator.c

+13 −6
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2015, The Linux Foundation. All rights reserved.

 * Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -324,6 +324,8 @@ msm8996_hmss_aging_init_quot_diff_param[] = { 
	{},

};



#define MSM8996PRO_SOC_ID			4



/*

 * Some initial msm8996 parts cannot be used in a meaningful way by software.

 * Other parts can only be used when operating with CPR disabled (i.e. at the
@@ -633,7 +635,8 @@ static int cpr3_msm8996_hmss_calculate_open_loop_voltages( 
	soc_revision = vreg->thread->ctrl->soc_revision;

	if (soc_revision == 1 || soc_revision == 2)

		ref_volt = msm8996_v1_v2_hmss_fuse_ref_volt;

	else if (fuse->speed_bin == 1 && fuse->cpr_fusing_rev >= 5)

	else if (soc_revision == 3 && fuse->speed_bin == 1

				   && fuse->cpr_fusing_rev >= 5)

		ref_volt = msm8996_v3_speed_bin1_rev5_hmss_fuse_ref_volt;

	else

		ref_volt = msm8996_v3_hmss_fuse_ref_volt;
@@ -1583,19 +1586,23 @@ static int cpr3_hmss_regulator_resume(struct platform_device *pdev) 
static struct of_device_id cpr_regulator_match_table[] = {

	{

		.compatible = "qcom,cpr3-msm8996-v1-hmss-regulator",

		.data = (void *)1

		.data = (void *)(uintptr_t)1

	},

	{

		.compatible = "qcom,cpr3-msm8996-v2-hmss-regulator",

		.data = (void *)2

		.data = (void *)(uintptr_t)2

	},

	{

		.compatible = "qcom,cpr3-msm8996-v3-hmss-regulator",

		.data = (void *)3

		.data = (void *)(uintptr_t)3

	},

	{

		.compatible = "qcom,cpr3-msm8996-hmss-regulator",

		.data = (void *)3

		.data = (void *)(uintptr_t)3

	},

	{

		.compatible = "qcom,cpr3-msm8996pro-hmss-regulator",

		.data = (void *)(uintptr_t)MSM8996PRO_SOC_ID,

	},

	{}

};