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mtd: spi: renesas: Add R-Car Gen4 support

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Support RPC SPI on R-Car Gen4 R8A779F0 S4 and R8A779G0 V4H SoCs.

Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
[Marek: Squash S4 and V4H patches, fix brackets around STRTIM2]
This commit is contained in:
Hai Pham 2021-08-05 14:38:26 +07:00 committed by Marek Vasut
parent 89208dba38
commit 8e8cb7e1a8
1 changed files with 5 additions and 0 deletions
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5
drivers/spi/renesas_rpc_spi.c
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@ -140,6 +140,7 @@
#define PRC_PHYCNT_EXDS BIT(21)
#define RPC_PHYCNT_OCT BIT(20)
#define RPC_PHYCNT_STRTIM(v) (((v) & 0x7) << 15)
#define RPC_PHYCNT_STRTIM2(v) ((((v) & 0x7) << 15) | (((v) & 0x8) << 24))
#define RPC_PHYCNT_WBUF2 BIT(4)
#define RPC_PHYCNT_WBUF BIT(2)
#define RPC_PHYCNT_MEM(v) (((v) & 0x3) << 0)
@ -212,9 +213,13 @@ static u32 rpc_spi_get_strobe_delay(void)
* 0: On H3 ES1.x (not supported in mainline U-Boot)
* 6: On M3 ES1.x
* 7: On other R-Car Gen3
* 15: On R-Car Gen4
*/
if (cpu_type == RMOBILE_CPU_TYPE_R8A7796 && rmobile_get_cpu_rev_integer() == 1)
return RPC_PHYCNT_STRTIM(6);
else if (cpu_type == RMOBILE_CPU_TYPE_R8A779F0 ||
cpu_type == RMOBILE_CPU_TYPE_R8A779G0)
return RPC_PHYCNT_STRTIM2(15);
else
#endif
return RPC_PHYCNT_STRTIM(7);