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| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2022-10-12 16:01:52 +0200 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2022-10-18 13:02:58 -0400 |
| commit | 1de3866f6d7a53dbee0ebe7d71eac738fb90972f (patch) | |
| tree | d79039fb0aada13874529f334047e16fb98a4eb7 | |
| parent | 5192481f908e576be42bd39ec12979b79e11f7e0 (diff) | |
| download | linux-stable-1de3866f6d7a53dbee0ebe7d71eac738fb90972f.tar.gz linux-stable-1de3866f6d7a53dbee0ebe7d71eac738fb90972f.tar.bz2 linux-stable-1de3866f6d7a53dbee0ebe7d71eac738fb90972f.zip | |
memory: renesas-rpc-if: Add support for R-Car Gen4
The SPI Multi I/O Bus Controller (RPC-IF) on R-Car Gen4 SoCs is very
similar to the RPC-IF on R-Car Gen3 SoCs. It does support four instead
of three bits of strobe timing adjustment (STRTIM), and thus requires a
new mask and new settings.
Inspired by a patch in the BSP by Cong Dang.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/4d0824bf5ed0fb95c51cd36f9a3f0f562b1a6bf8.1665583089.git.geert+renesas@glider.be
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
| -rw-r--r-- | drivers/memory/renesas-rpc-if.c | 19 | ||||
| -rw-r--r-- | include/memory/renesas-rpc-if.h | 1 |
2 files changed, 13 insertions, 7 deletions
diff --git a/drivers/memory/renesas-rpc-if.c b/drivers/memory/renesas-rpc-if.c index 61c288d40375..09cd4318a83d 100644 --- a/drivers/memory/renesas-rpc-if.c +++ b/drivers/memory/renesas-rpc-if.c @@ -136,7 +136,8 @@ #define RPCIF_PHYCNT_DDRCAL BIT(19) #define RPCIF_PHYCNT_HS BIT(18) #define RPCIF_PHYCNT_CKSEL(v) (((v) & 0x3) << 16) /* valid only for RZ/G2L */ -#define RPCIF_PHYCNT_STRTIM(v) (((v) & 0x7) << 15) /* valid for R-Car and RZ/G2{E,H,M,N} */ +#define RPCIF_PHYCNT_STRTIM(v) (((v) & 0x7) << 15 | ((v) & 0x8) << 24) /* valid for R-Car and RZ/G2{E,H,M,N} */ + #define RPCIF_PHYCNT_WBUF2 BIT(4) #define RPCIF_PHYCNT_WBUF BIT(2) #define RPCIF_PHYCNT_PHYMEM(v) (((v) & 0x3) << 0) @@ -323,6 +324,9 @@ int rpcif_hw_init(struct rpcif *rpc, bool hyperflash) if (rpc->type == RPCIF_RCAR_GEN3) regmap_update_bits(rpc->regmap, RPCIF_PHYCNT, RPCIF_PHYCNT_STRTIM(7), RPCIF_PHYCNT_STRTIM(7)); + else if (rpc->type == RPCIF_RCAR_GEN4) + regmap_update_bits(rpc->regmap, RPCIF_PHYCNT, + RPCIF_PHYCNT_STRTIM(15), RPCIF_PHYCNT_STRTIM(15)); regmap_update_bits(rpc->regmap, RPCIF_PHYOFFSET1, RPCIF_PHYOFFSET1_DDRTMG(3), RPCIF_PHYOFFSET1_DDRTMG(3)); @@ -333,17 +337,17 @@ int rpcif_hw_init(struct rpcif *rpc, bool hyperflash) regmap_update_bits(rpc->regmap, RPCIF_PHYINT, RPCIF_PHYINT_WPVAL, 0); - if (rpc->type == RPCIF_RCAR_GEN3) - regmap_update_bits(rpc->regmap, RPCIF_CMNCR, - RPCIF_CMNCR_MOIIO(3) | RPCIF_CMNCR_BSZ(3), - RPCIF_CMNCR_MOIIO(3) | - RPCIF_CMNCR_BSZ(hyperflash ? 1 : 0)); - else + if (rpc->type == RPCIF_RZ_G2L) regmap_update_bits(rpc->regmap, RPCIF_CMNCR, RPCIF_CMNCR_MOIIO(3) | RPCIF_CMNCR_IOFV(3) | RPCIF_CMNCR_BSZ(3), RPCIF_CMNCR_MOIIO(1) | RPCIF_CMNCR_IOFV(2) | RPCIF_CMNCR_BSZ(hyperflash ? 1 : 0)); + else + regmap_update_bits(rpc->regmap, RPCIF_CMNCR, + RPCIF_CMNCR_MOIIO(3) | RPCIF_CMNCR_BSZ(3), + RPCIF_CMNCR_MOIIO(3) | + RPCIF_CMNCR_BSZ(hyperflash ? 1 : 0)); /* Set RCF after BSZ update */ regmap_write(rpc->regmap, RPCIF_DRCR, RPCIF_DRCR_RCF); @@ -718,6 +722,7 @@ static int rpcif_remove(struct platform_device *pdev) static const struct of_device_id rpcif_of_match[] = { { .compatible = "renesas,rcar-gen3-rpc-if", .data = (void *)RPCIF_RCAR_GEN3 }, + { .compatible = "renesas,rcar-gen4-rpc-if", .data = (void *)RPCIF_RCAR_GEN4 }, { .compatible = "renesas,rzg2l-rpc-if", .data = (void *)RPCIF_RZ_G2L }, {}, }; diff --git a/include/memory/renesas-rpc-if.h b/include/memory/renesas-rpc-if.h index 9c0ad64b8d29..862eff613dc7 100644 --- a/include/memory/renesas-rpc-if.h +++ b/include/memory/renesas-rpc-if.h @@ -59,6 +59,7 @@ struct rpcif_op { enum rpcif_type { RPCIF_RCAR_GEN3, + RPCIF_RCAR_GEN4, RPCIF_RZ_G2L, }; |