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4f5bc54d28
Reduce the sizes of the rcar_sysc_area and rcar_gen4_sysc_area structures: - parent is in the range [-1..32] or [-1..64], so s8 is sufficient, - flags needs just 3 bits (for now), so u8 is plenty. This reduces kernel size by: - 288 bytes for an R-Car Gen1+Gen2 kernel (arm32), - 1772 bytes for an R-Car Gen3+Gen4 kernel (arm64). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/cbbc8f464743d636895c048de61aa610d75392de.1654701156.git.geert+renesas@glider.be
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* R-Car Gen4 System Controller
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*
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* Copyright (C) 2021 Renesas Electronics Corp.
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*/
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#ifndef __SOC_RENESAS_RCAR_GEN4_SYSC_H__
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#define __SOC_RENESAS_RCAR_GEN4_SYSC_H__
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#include <linux/types.h>
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/*
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* Power Domain flags
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*/
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#define PD_CPU BIT(0) /* Area contains main CPU core */
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#define PD_SCU BIT(1) /* Area contains SCU and L2 cache */
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#define PD_NO_CR BIT(2) /* Area lacks PWR{ON,OFF}CR registers */
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#define PD_CPU_NOCR (PD_CPU | PD_NO_CR) /* CPU area lacks CR */
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#define PD_ALWAYS_ON PD_NO_CR /* Always-on area */
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/*
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* Description of a Power Area
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*/
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struct rcar_gen4_sysc_area {
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const char *name;
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u8 pdr; /* PDRn */
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s8 parent; /* -1 if none */
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u8 flags; /* See PD_* */
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};
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/*
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* SoC-specific Power Area Description
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*/
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struct rcar_gen4_sysc_info {
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const struct rcar_gen4_sysc_area *areas;
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unsigned int num_areas;
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};
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extern const struct rcar_gen4_sysc_info r8a779a0_sysc_info;
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extern const struct rcar_gen4_sysc_info r8a779f0_sysc_info;
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extern const struct rcar_gen4_sysc_info r8a779g0_sysc_info;
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#endif /* __SOC_RENESAS_RCAR_GEN4_SYSC_H__ */
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