linux-kernel - [PATCH 2/3] spi: spi-nxp-fspi: Add driver support for imx8dxl

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Message-Id: <20210301103230.1816168-3-kuldeep.singh@nxp.com>
Date:   Mon,  1 Mar 2021 16:02:29 +0530
From:   Kuldeep Singh <kuldeep.singh@....com>
To:     linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Ashish Kumar <ashish.kumar@....com>,
        Mark Brown <broonie@...nel.org>, Han Xu <han.xu@....com>,
        Kuldeep Singh <kuldeep.singh@....com>
Subject: [PATCH 2/3] spi: spi-nxp-fspi: Add driver support for imx8dxl

From: Han Xu <han.xu@....com>

Add driver support for imx8dxl which support read through IP bus only
and disable AHB bus due to an IC errata. Use the pre-defined quirk
FSPI_QUIRK_USE_IP_ONLY directly in device-type data to disable AHB read.

Signed-off-by: Han Xu <han.xu@....com>
Signed-off-by: Kuldeep Singh <kuldeep.singh@....com>
---
Hi Mark,
This patch is dependent on
https://patchwork.kernel.org/project/spi-devel-general/patch/1614593046-23832-1-git-send-email-kuldeep.singh@nxp.com/

 drivers/spi/spi-nxp-fspi.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/spi/spi-nxp-fspi.c b/drivers/spi/spi-nxp-fspi.c
index 829391e20e92..80a9278d91ed 100644
--- a/drivers/spi/spi-nxp-fspi.c
+++ b/drivers/spi/spi-nxp-fspi.c
@@ -346,6 +346,14 @@ static const struct nxp_fspi_devtype_data imx8qxp_data = {
 	.little_endian = true,  /* little-endian    */
 };
 
+static const struct nxp_fspi_devtype_data imx8dxl_data = {
+	.rxfifo = SZ_512,       /* (64  * 64 bits)  */
+	.txfifo = SZ_1K,        /* (128 * 64 bits)  */
+	.ahb_buf_size = SZ_2K,  /* (256 * 64 bits)  */
+	.quirks = FSPI_QUIRK_USE_IP_ONLY,
+	.little_endian = true,  /* little-endian    */
+};
+
 struct nxp_fspi {
 	void __iomem *iobase;
 	void __iomem *ahb_addr;
@@ -1168,6 +1176,7 @@ static const struct of_device_id nxp_fspi_dt_ids[] = {
 	{ .compatible = "nxp,lx2160a-fspi", .data = (void *)&lx2160a_data, },
 	{ .compatible = "nxp,imx8mm-fspi", .data = (void *)&imx8mm_data, },
 	{ .compatible = "nxp,imx8qxp-fspi", .data = (void *)&imx8qxp_data, },
+	{ .compatible = "nxp,imx8dxl-fspi", .data = (void *)&imx8dxl_data, },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, nxp_fspi_dt_ids);
-- 
2.25.1