35 lines
1.1 KiB
Diff
35 lines
1.1 KiB
Diff
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
|
|
Date: Thu, 21 Jan 2021 10:44:53 +0100
|
|
Subject: [PATCH] mtd: rawnand: brcmnand: disable WP on BCM4908
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
BCM4908 contains NAND controller version 0x0701 (v7.1). It means that
|
|
NAND_WP should be available.
|
|
|
|
For some reason setting #WP on doesn't result in clearing NAND_STATUS_WP
|
|
status bit:
|
|
[ 1.077857] bcm63138_nand ff801800.nand: timeout on status poll (expected c0000040 got c00000c0)
|
|
[ 1.086832] bcm63138_nand ff801800.nand: nand #WP expected on
|
|
|
|
For now try working without touching #WP.
|
|
|
|
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
|
---
|
|
|
|
--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
|
|
+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
|
|
@@ -37,7 +37,11 @@
|
|
* 1: NAND_WP is set by default, cleared for erase/write operations
|
|
* 2: NAND_WP is always cleared
|
|
*/
|
|
+#if IS_ENABLED(CONFIG_ARCH_BCM4908)
|
|
+static int wp_on = 0;
|
|
+#else
|
|
static int wp_on = 1;
|
|
+#endif
|
|
module_param(wp_on, int, 0444);
|
|
|
|
/***********************************************************************
|