[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20221128020613.14821-7-xiangsheng.hou@mediatek.com>
Date: Mon, 28 Nov 2022 10:06:10 +0800
From: Xiangsheng Hou <xiangsheng.hou@...iatek.com>
To: Miquel Raynal <miquel.raynal@...tlin.com>,
Richard Weinberger <richard@....at>,
Vignesh Raghavendra <vigneshr@...com>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Matthias Brugger <matthias.bgg@...il.com>,
Mark Brown <broonie@...nel.org>,
Chuanhong Guo <gch981213@...il.com>
CC: Xiangsheng Hou <xiangsheng.hou@...iatek.com>,
<linux-mtd@...ts.infradead.org>, <devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <linux-spi@...r.kernel.org>,
<benliang.zhao@...iatek.com>, <bin.zhang@...iatek.com>
Subject: [PATCH 6/9] spi: mtk-snfi: add snfi sample delay and read latency adjustment
Add snfi sample delay and read latency adjustment which can get
from dts property.
Signed-off-by: Xiangsheng Hou <xiangsheng.hou@...iatek.com>
---
drivers/spi/spi-mtk-snfi.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/spi/spi-mtk-snfi.c b/drivers/spi/spi-mtk-snfi.c
index 85644308df23..e8587cf2aff2 100644
--- a/drivers/spi/spi-mtk-snfi.c
+++ b/drivers/spi/spi-mtk-snfi.c
@@ -195,6 +195,8 @@
#define DATA_READ_MODE_X4 2
#define DATA_READ_MODE_DUAL 5
#define DATA_READ_MODE_QUAD 6
+#define DATA_READ_LATCH_LAT GENMASK(9, 8)
+#define DATA_READ_LATCH_LAT_S 8
#define PG_LOAD_CUSTOM_EN BIT(7)
#define DATARD_CUSTOM_EN BIT(6)
#define CS_DESELECT_CYC_S 0
@@ -205,6 +207,7 @@
#define SNF_DLY_CTL3 0x548
#define SFCK_SAM_DLY_S 0
+#define SFCK_SAM_DLY GENMASK(5, 0)
#define SNF_STA_CTL1 0x550
#define CUS_PG_DONE BIT(28)
@@ -1368,6 +1371,7 @@ static int mtk_snand_probe(struct platform_device *pdev)
const struct of_device_id *dev_id;
struct spi_controller *ctlr;
struct mtk_snand *ms;
+ u32 val = 0;
int ret;
dev_id = of_match_node(mtk_snand_ids, np);
@@ -1446,6 +1450,15 @@ static int mtk_snand_probe(struct platform_device *pdev)
// switch to SNFI mode
nfi_write32(ms, SNF_CFG, SPI_MODE);
+ ret = of_property_read_u32(np, "rx-sample-delay", &val);
+ if (!ret)
+ nfi_rmw32(ms, SNF_DLY_CTL3, SFCK_SAM_DLY, val);
+
+ ret = of_property_read_u32(np, "rx-latch-latency", &val);
+ if (!ret)
+ nfi_rmw32(ms, SNF_MISC_CTL, DATA_READ_LATCH_LAT,
+ val << DATA_READ_LATCH_LAT_S);
+
// setup an initial page format for ops matching page_cache_op template
// before ECC is called.
ret = mtk_snand_setup_pagefmt(ms, SZ_2K, SZ_64);
--
2.25.1
Powered by blists - more mailing lists