1 From 44ae4ed142265a6d50a9d3e6f4c395f97b6849ab Mon Sep 17 00:00:00 2001
2 From: Zhanyong Wang <zhanyong.wang@mediatek.com>
3 Date: Sat, 6 Nov 2021 20:06:30 +0800
4 Subject: [PATCH 2/5] nvmem: mtk-efuse: support minimum one byte access stride
7 In order to support nvmem bits property, should support minimum 1 byte
8 read stride and minimum 1 byte read granularity at the same time.
10 Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
11 Signed-off-by: Zhanyong Wang <zhanyong.wang@mediatek.com>
12 Change-Id: Iafe1ebf195d58a3e9e3518913f795d14a01dfd3b
14 drivers/nvmem/mtk-efuse.c | 13 +++++++------
15 1 file changed, 7 insertions(+), 6 deletions(-)
17 --- a/drivers/nvmem/mtk-efuse.c
18 +++ b/drivers/nvmem/mtk-efuse.c
19 @@ -19,11 +19,12 @@ static int mtk_reg_read(void *context,
20 unsigned int reg, void *_val, size_t bytes)
22 struct mtk_efuse_priv *priv = context;
24 - int i = 0, words = bytes / 4;
25 + void __iomem *addr = priv->base + reg;
30 - *val++ = readl(priv->base + reg + (i++ * 4));
31 + for (i = 0; i < bytes; i++, val++)
32 + *val = readb(addr + i);
36 @@ -45,8 +46,8 @@ static int mtk_efuse_probe(struct platfo
37 if (IS_ERR(priv->base))
38 return PTR_ERR(priv->base);
41 - econfig.word_size = 4;
43 + econfig.word_size = 1;
44 econfig.reg_read = mtk_reg_read;
45 econfig.size = resource_size(res);