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Add support for the power areas in the Renesas R-Car M3-W+ (R8A77961)
SoC to the R-Car System Controller driver.
R-Car M3-W+ (aka R-Car M3-W ES3.0) is very similar to R-Car
M3-W (R8A77960), which allows for both SoCs to share a driver:
- R-Car M3-W+ lacks the A2VC power area, so its area must be
nullified,
- The existing support for the SYSCEXTMASK register added in commit
9bd645af9d2a49ac ("soc: renesas: r8a7796-sysc: Fix power request
conflicts") applies to ES3.0 and later only.
As R-Car M3-W+ uses a different compatible value, differentiate
based on that, instead of on the ES version.
Based on a patch in the BSP by Dien Pham <dien.pham.ry@renesas.com>.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20191023123342.13100-7-geert+renesas@glider.be
68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Renesas R-Car M3-W/W+ System Controller
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*
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* Copyright (C) 2016 Glider bvba
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* Copyright (C) 2018-2019 Renesas Electronics Corporation
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*/
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#include <linux/bits.h>
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#include <linux/kernel.h>
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#include <dt-bindings/power/r8a7796-sysc.h>
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#include "rcar-sysc.h"
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static struct rcar_sysc_area r8a7796_areas[] __initdata = {
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{ "always-on", 0, 0, R8A7796_PD_ALWAYS_ON, -1, PD_ALWAYS_ON },
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{ "ca57-scu", 0x1c0, 0, R8A7796_PD_CA57_SCU, R8A7796_PD_ALWAYS_ON,
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PD_SCU },
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{ "ca57-cpu0", 0x80, 0, R8A7796_PD_CA57_CPU0, R8A7796_PD_CA57_SCU,
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PD_CPU_NOCR },
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{ "ca57-cpu1", 0x80, 1, R8A7796_PD_CA57_CPU1, R8A7796_PD_CA57_SCU,
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PD_CPU_NOCR },
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{ "ca53-scu", 0x140, 0, R8A7796_PD_CA53_SCU, R8A7796_PD_ALWAYS_ON,
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PD_SCU },
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{ "ca53-cpu0", 0x200, 0, R8A7796_PD_CA53_CPU0, R8A7796_PD_CA53_SCU,
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PD_CPU_NOCR },
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{ "ca53-cpu1", 0x200, 1, R8A7796_PD_CA53_CPU1, R8A7796_PD_CA53_SCU,
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PD_CPU_NOCR },
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{ "ca53-cpu2", 0x200, 2, R8A7796_PD_CA53_CPU2, R8A7796_PD_CA53_SCU,
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PD_CPU_NOCR },
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{ "ca53-cpu3", 0x200, 3, R8A7796_PD_CA53_CPU3, R8A7796_PD_CA53_SCU,
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PD_CPU_NOCR },
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{ "cr7", 0x240, 0, R8A7796_PD_CR7, R8A7796_PD_ALWAYS_ON },
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{ "a3vc", 0x380, 0, R8A7796_PD_A3VC, R8A7796_PD_ALWAYS_ON },
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{ "a2vc0", 0x3c0, 0, R8A7796_PD_A2VC0, R8A7796_PD_A3VC },
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{ "a2vc1", 0x3c0, 1, R8A7796_PD_A2VC1, R8A7796_PD_A3VC },
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{ "3dg-a", 0x100, 0, R8A7796_PD_3DG_A, R8A7796_PD_ALWAYS_ON },
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{ "3dg-b", 0x100, 1, R8A7796_PD_3DG_B, R8A7796_PD_3DG_A },
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{ "a3ir", 0x180, 0, R8A7796_PD_A3IR, R8A7796_PD_ALWAYS_ON },
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};
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#ifdef CONFIG_SYSC_R8A77960
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const struct rcar_sysc_info r8a77960_sysc_info __initconst = {
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.areas = r8a7796_areas,
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.num_areas = ARRAY_SIZE(r8a7796_areas),
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};
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#endif /* CONFIG_SYSC_R8A77960 */
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#ifdef CONFIG_SYSC_R8A77961
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static int __init r8a77961_sysc_init(void)
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{
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rcar_sysc_nullify(r8a7796_areas, ARRAY_SIZE(r8a7796_areas),
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R8A7796_PD_A2VC0);
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return 0;
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}
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const struct rcar_sysc_info r8a77961_sysc_info __initconst = {
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.init = r8a77961_sysc_init,
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.areas = r8a7796_areas,
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.num_areas = ARRAY_SIZE(r8a7796_areas),
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.extmask_offs = 0x2f8,
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.extmask_val = BIT(0),
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};
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#endif /* CONFIG_SYSC_R8A77961 */
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