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soc: renesas: rcar-sysc: Optimize rcar_sysc_area struct sizes

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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
This commit is contained in:
Geert Uytterhoeven 2022-06-08 17:14:21 +02:00
parent bccceabb92
commit 4f5bc54d28
2 changed files with 4 additions and 4 deletions
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4
drivers/soc/renesas/rcar-gen4-sysc.h
View File

@ -25,8 +25,8 @@
struct rcar_gen4_sysc_area {
const char *name;
u8 pdr; /* PDRn */
int parent; /* -1 if none */
unsigned int flags; /* See PD_* */
s8 parent; /* -1 if none */
u8 flags; /* See PD_* */
};
/*

4
drivers/soc/renesas/rcar-sysc.h
View File

@ -31,8 +31,8 @@ struct rcar_sysc_area {
u16 chan_offs; /* Offset of PWRSR register for this area */
u8 chan_bit; /* Bit in PWR* (except for PWRUP in PWRSR) */
u8 isr_bit; /* Bit in SYSCI*R */
int parent; /* -1 if none */
unsigned int flags; /* See PD_* */
s8 parent; /* -1 if none */
u8 flags; /* See PD_* */
};