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clk: msm: clock-osm: support MEM-ACC threshold voltage for Silver cluster

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Add support for configuring the memory accelerator (MEM-ACC)
threshold voltage for the Silver cluster. This threshold
voltage is used to resolve the MEM-ACC crossover virtual corner
number required by the OSM sequence to program MEM-ACC settings
based on a voltage threshold.

CRs-Fixed: 1113780
Change-Id: Iba58a23ae0d30429da629afa9d5f9cb34e025543
Signed-off-by: Osvaldo Banuelos <osvaldob@codeaurora.org>
This commit is contained in:
Osvaldo Banuelos 2017-01-19 11:11:58 -08:00
parent 1f1d944084
commit 89ae37eba0
2 changed files with 23 additions and 3 deletions
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10
Documentation/devicetree/bindings/arm/msm/qcom,osm.txt
View file

@ -281,6 +281,16 @@ Properties:
performance mode with a total of 4 tuples corresponding
to each supported performance mode.
- qcom,pwrcl-apcs-mem-acc-threshold-voltage
Usage: optional
Value type: <u32>
Definition: Specifies the highest MEM ACC threshold voltage in
microvolts for the Power cluster. This voltage is
used to determine which MEM ACC setting is used for the
highest frequencies. If specified, the voltage must match
the MEM ACC threshold voltage specified for the
corresponding CPRh device.
- qcom,perfcl-apcs-mem-acc-val
Usage: required if qcom,osm-no-tz is specified
Value type: <prop-encoded-array>

16
drivers/clk/msm/clock-osm.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2016, The Linux Foundation. All rights reserved.
* Copyright (c) 2016-2017, 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
@ -83,6 +83,7 @@ enum clk_osm_trace_packet_id {
#define VERSION_REG 0x0
#define OSM_TABLE_SIZE 40
#define MAX_VIRTUAL_CORNER (OSM_TABLE_SIZE - 1)
#define MAX_CLUSTER_CNT 2
#define CORE_COUNT_VAL(val) ((val & GENMASK(18, 16)) >> 16)
#define SINGLE_CORE 1
@ -1662,6 +1663,14 @@ static int clk_osm_resolve_crossover_corners(struct clk_osm *c,
break;
}
}
/*
* This assumes the OSM table uses corners
* 0 to MAX_VIRTUAL_CORNER - 1.
*/
if (!c->mem_acc_threshold_vc)
c->mem_acc_threshold_vc =
MAX_VIRTUAL_CORNER;
}
return 0;
@ -3232,9 +3241,10 @@ static int cpu_clock_osm_driver_probe(struct platform_device *pdev)
return rc;
}
rc = clk_osm_resolve_crossover_corners(&pwrcl_clk, pdev, NULL);
rc = clk_osm_resolve_crossover_corners(&pwrcl_clk, pdev,
"qcom,pwrcl-apcs-mem-acc-threshold-voltage");
if (rc)
dev_info(&pdev->dev, "No APM crossover corner programmed\n");
dev_info(&pdev->dev, "No MEM-ACC crossover corner programmed\n");
rc = clk_osm_resolve_crossover_corners(&perfcl_clk, pdev,
"qcom,perfcl-apcs-mem-acc-threshold-voltage");