From: ziv.xu <ziv.xu@starfive.com>
Date: Thu, 9 Feb 2023 02:15:59 +0000 (+0800)
Subject: spi-cadence-quadspi: add reset before resume
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=16d2a17eb38f3bd1b475da7e4f223a8b412b5988;p=platform%2Fkernel%2Flinux-starfive.git

spi-cadence-quadspi: add reset before resume

add reset before resume

Signed-off-by: ziv.xu <ziv.xu@starfive.com>
---

diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c
index 4b13085ed03d..9be48b1d64a4 100644
--- a/drivers/spi/spi-cadence-quadspi.c
+++ b/drivers/spi/spi-cadence-quadspi.c
@@ -1248,7 +1248,14 @@ static int cqspi_mem_process(struct spi_mem *mem, const struct spi_mem_op *op)
 static int cqspi_exec_mem_op(struct spi_mem *mem, const struct spi_mem_op *op)
 {
 	int ret;
+	struct cqspi_st *cqspi = spi_master_get_devdata(mem->spi->master);
+
+	if (op->cmd.opcode == SPINOR_OP_RDCR) {
+		void __iomem	*reset_res;
 
+		reset_res = ioremap(STARFIVE_RESET_REG_BASE_ADDR, 0x300);
+		writel(0X7E7FE00, reset_res + QSPI_RESET_REG_OFFSET);
+	}
 	ret = cqspi_mem_process(mem, op);
 
 	if (ret)