From 630cf2e7628502b410622fcfa72bd553a94dfa93 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Sat, 15 Aug 2015 11:38:33 +0200
Subject: [PATCH] sunxi_nand_spl: We only need to reset the nand chip once
There is no need to reset the nand chip for every ecc-block read.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
---
drivers/mtd/nand/sunxi_nand_spl.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/drivers/mtd/nand/sunxi_nand_spl.c b/drivers/mtd/nand/sunxi_nand_spl.c
index 46654e4ef6..56c0be02f5 100644
--- a/drivers/mtd/nand/sunxi_nand_spl.c
+++ b/drivers/mtd/nand/sunxi_nand_spl.c
@@ -162,6 +162,16 @@ void nand_init(void)
NFC_CTL_RESET, MAX_RETRIES)) {
printf("Couldn't initialize nand\n");
}
+
+ /* reset NAND */
+ writel(NFC_SEND_CMD1 | NFC_WAIT_FLAG | NAND_CMD_RESET,
+ SUNXI_NFC_BASE + NFC_CMD);
+
+ if (!check_value(SUNXI_NFC_BASE + NFC_ST, NFC_CMD_INT_FLAG,
+ MAX_RETRIES)) {
+ printf("Error timeout waiting for nand reset\n");
+ return;
+ }
}
static void nand_read_page(unsigned int real_addr, dma_addr_t dst,
@@ -223,16 +233,6 @@ static void nand_read_page(unsigned int real_addr, dma_addr_t dst,
return;
}
- /* set CMD */
- writel(NFC_SEND_CMD1 | NFC_WAIT_FLAG | NAND_CMD_RESET,
- SUNXI_NFC_BASE + NFC_CMD);
-
- if (!check_value(SUNXI_NFC_BASE + NFC_ST, NFC_CMD_INT_FLAG,
- MAX_RETRIES)) {
- printf("Error while initilizing command interrupt\n");
- return;
- }
-
page = real_addr / CONFIG_NAND_SUNXI_SPL_PAGE_SIZE;
column = real_addr % CONFIG_NAND_SUNXI_SPL_PAGE_SIZE;
--
2.39.5