From 7ead3860fcce0af1ccde3cb82169be0f036ca5a0 Mon Sep 17 00:00:00 2001
From: Kuldeep Singh <kuldeep.singh@nxp.com>
Date: Wed, 1 Sep 2021 15:34:35 +0530
Subject: [PATCH] LF-4255 spi: spi-nxp-fspi: Add quirk to disable DTR support
Not all platform currently supports octal DTR mode. This causes flash
probe failure and therefore, provide an option of quirk
NXP_FSPI_QUIRK_DISABLE_DTR for platforms not supporting DTR.
Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
---
drivers/spi/spi-nxp-fspi.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/spi/spi-nxp-fspi.c b/drivers/spi/spi-nxp-fspi.c
index 1899492afed888..529f30ad89d4df 100644
--- a/drivers/spi/spi-nxp-fspi.c
+++ b/drivers/spi/spi-nxp-fspi.c
@@ -319,6 +319,9 @@
/* access memory via IPS only due to this errata */
#define NXP_FSPI_QUIRK_ERR050601 BIT(0)
+/* Disable Octal DTR */
+#define NXP_FSPI_QUIRK_DISABLE_DTR BIT(1)
+
struct nxp_fspi_devtype_data {
unsigned int rxfifo;
unsigned int txfifo;
@@ -331,7 +334,7 @@ static const struct nxp_fspi_devtype_data lx2160a_data = {
.rxfifo = SZ_512, /* (64 * 64 bits) */
.txfifo = SZ_1K, /* (128 * 64 bits) */
.ahb_buf_size = SZ_2K, /* (256 * 64 bits) */
- .quirks = 0,
+ .quirks = NXP_FSPI_QUIRK_DISABLE_DTR,
.little_endian = true, /* little-endian */
};
@@ -383,6 +386,11 @@ static inline int nxp_fspi_ips_access_only(struct nxp_fspi *f)
return f->devtype_data->quirks & NXP_FSPI_QUIRK_ERR050601;
}
+static inline int nxp_fspi_disable_dtr(struct nxp_fspi *f)
+{
+ return f->devtype_data->quirks & NXP_FSPI_QUIRK_DISABLE_DTR;
+}
+
/*
* R/W functions for big- or little-endian registers:
* The FSPI controller's endianness is independent of
@@ -484,7 +492,8 @@ static bool nxp_fspi_supports_op(struct spi_mem *mem,
op->data.nbytes > f->devtype_data->txfifo)
return false;
- if (op->cmd.dtr && op->addr.dtr && op->dummy.dtr && op->data.dtr)
+ if (!nxp_fspi_disable_dtr(f) &&
+ op->cmd.dtr && op->addr.dtr && op->dummy.dtr && op->data.dtr)
return spi_mem_dtr_supports_op(mem, op);
return spi_mem_default_supports_op(mem, op);
--
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