From 79c75300b18bf2dbc60fa67a7abc8e66d8e3afd3 Mon Sep 17 00:00:00 2001
From: Benjamin Valentin <benpicco@googlemail.com>
Date: Tue, 24 Nov 2020 20:53:51 +0100
Subject: [PATCH] drivers/mtd_spi_nor: enter 4-byte address mode needs write
 enable

---
 drivers/mtd_spi_nor/mtd_spi_nor.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mtd_spi_nor/mtd_spi_nor.c b/drivers/mtd_spi_nor/mtd_spi_nor.c
index c8c0b680a5..1e5b73a132 100644
--- a/drivers/mtd_spi_nor/mtd_spi_nor.c
+++ b/drivers/mtd_spi_nor/mtd_spi_nor.c
@@ -400,6 +400,7 @@ static int mtd_spi_nor_power(mtd_dev_t *mtd, enum mtd_power_state power)
 #endif
             /* enable 32 bit address mode */
             if (dev->params->addr_width == 4) {
+                mtd_spi_cmd(dev, dev->params->opcode->wren);
                 mtd_spi_cmd(dev, SFLASH_CMD_4_BYTE_ADDR);
             }