linux-kernel - [PATCH v2 08/11] serial: 8250_dw: Add Sophgo SG2042 support

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Date:   Wed, 20 Sep 2023 14:40:15 +0800
From:   Chen Wang <unicornxw@...il.com>
To:     aou@...s.berkeley.edu, chao.wei@...hgo.com, conor@...nel.org,
        devicetree@...r.kernel.org, emil.renner.berthing@...onical.com,
        guoren@...nel.org, jszhang@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org, palmer@...belt.com,
        paul.walmsley@...ive.com, robh+dt@...nel.org,
        xiaoguang.xing@...hgo.com
Cc:     Chen Wang <wangchen20@...as.ac.cn>
Subject: [PATCH v2 08/11] serial: 8250_dw: Add Sophgo SG2042 support

From: Emil Renner Berthing <emil.renner.berthing@...onical.com>

Add quirk to skip setting the input clock rate for the uarts on the
Sophgo SG2042 SoC similar to the StarFive JH7100.

Signed-off-by: Emil Renner Berthing <emil.renner.berthing@...onical.com>
Signed-off-by: Chen Wang <wangchen20@...as.ac.cn>
---
 drivers/tty/serial/8250/8250_dw.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index f4cafca1a7da..6c344877a07f 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -770,7 +770,7 @@ static const struct dw8250_platform_data dw8250_renesas_rzn1_data = {
 	.quirks = DW_UART_QUIRK_IS_DMA_FC,
 };
 
-static const struct dw8250_platform_data dw8250_starfive_jh7100_data = {
+static const struct dw8250_platform_data dw8250_skip_set_rate_data = {
 	.usr_reg = DW_UART_USR,
 	.quirks = DW_UART_QUIRK_SKIP_SET_RATE,
 };
@@ -780,7 +780,8 @@ static const struct of_device_id dw8250_of_match[] = {
 	{ .compatible = "cavium,octeon-3860-uart", .data = &dw8250_octeon_3860_data },
 	{ .compatible = "marvell,armada-38x-uart", .data = &dw8250_armada_38x_data },
 	{ .compatible = "renesas,rzn1-uart", .data = &dw8250_renesas_rzn1_data },
-	{ .compatible = "starfive,jh7100-uart", .data = &dw8250_starfive_jh7100_data },
+	{ .compatible = "sophgo,sg2042-uart", .data = &dw8250_skip_set_rate_data },
+	{ .compatible = "starfive,jh7100-uart", .data = &dw8250_skip_set_rate_data },
 	{ /* Sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, dw8250_of_match);
-- 
2.25.1