linux-kernel - [PATCH 4/4] spi: sun6i: add support for R329 SPI controllers

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Message-ID: <BYAPR20MB2472717D5AC20E7702329996BCF79@BYAPR20MB2472.namprd20.prod.outlook.com>
Date:   Fri, 22 Apr 2022 23:56:39 +0800
From:   icenowy@...look.com
To:     Mark Brown <broonie@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>,
        Maxime Ripard <mripard@...nel.org>
Cc:     linux-spi@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        linux-kernel@...r.kernel.org, Icenowy Zheng <icenowy@...c.io>
Subject: [PATCH 4/4] spi: sun6i: add support for R329 SPI controllers

From: Icenowy Zheng <icenowy@...c.io>

R329 has two SPI controllers. One of it is quite similar to previous
ones, but with internal clock divider removed; the other added MIPI DBI
Type-C offload based on the first one.

Add basical support for these controllers. As we're not going to
support the DBI functionality now, just implement the two kinds of
controllers as the same.

Signed-off-by: Icenowy Zheng <icenowy@...c.io>
---
 drivers/spi/spi-sun6i.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/spi/spi-sun6i.c b/drivers/spi/spi-sun6i.c
index fc81afc3a963..c4bd8ea31b43 100644
--- a/drivers/spi/spi-sun6i.c
+++ b/drivers/spi/spi-sun6i.c
@@ -716,9 +716,21 @@ static const struct sun6i_spi_cfg sun8i_h3_spi_cfg = {
 	.has_clk_ctl	= true,
 };
 
+static const struct sun6i_spi_cfg sun50i_r329_spi_cfg = {
+	.fifo_depth	= SUN8I_FIFO_DEPTH,
+};
+
 static const struct of_device_id sun6i_spi_match[] = {
 	{ .compatible = "allwinner,sun6i-a31-spi", .data = &sun6i_a31_spi_cfg },
 	{ .compatible = "allwinner,sun8i-h3-spi",  .data = &sun8i_h3_spi_cfg },
+	{
+		.compatible = "allwinner,sun50i-r329-spi",
+		.data = &sun50i_r329_spi_cfg
+	},
+	{
+		.compatible = "allwinner,sun50i-r329-spi-dbi",
+		.data = &sun50i_r329_spi_cfg
+	},
 	{}
 };
 MODULE_DEVICE_TABLE(of, sun6i_spi_match);
-- 
2.35.1