netdev - [PATCH net-next 07/20] can: rockchip_canfd: add support for rk3568v3

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Message-ID: <20240904094218.1925386-8-mkl@pengutronix.de>
Date: Wed,  4 Sep 2024 11:38:42 +0200
From: Marc Kleine-Budde <mkl@...gutronix.de>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net,
	kuba@...nel.org,
	linux-can@...r.kernel.org,
	kernel@...gutronix.de,
	Marc Kleine-Budde <mkl@...gutronix.de>,
	Alibek Omarov <a1ba.omarov@...il.com>,
	Heiko Stuebner <heiko@...ech.de>
Subject: [PATCH net-next 07/20] can: rockchip_canfd: add support for rk3568v3

Add the support for the rk3568v3 SoC, the CAN-FD IP core has 7
documented errata.

Tested-by: Alibek Omarov <a1ba.omarov@...il.com>
Acked-by: Heiko Stuebner <heiko@...ech.de>
Link: https://patch.msgid.link/20240904-rockchip-canfd-v5-7-8ae22bcb27cc@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
---
 .../net/can/rockchip/rockchip_canfd-core.c    | 20 +++++++++++++++++++
 drivers/net/can/rockchip/rockchip_canfd.h     |  1 +
 2 files changed, 21 insertions(+)

diff --git a/drivers/net/can/rockchip/rockchip_canfd-core.c b/drivers/net/can/rockchip/rockchip_canfd-core.c
index 61de6f89cf16..40911bb63623 100644
--- a/drivers/net/can/rockchip/rockchip_canfd-core.c
+++ b/drivers/net/can/rockchip/rockchip_canfd-core.c
@@ -35,11 +35,28 @@ static const struct rkcanfd_devtype_data rkcanfd_devtype_data_rk3568v2 = {
 		RKCANFD_QUIRK_CANFD_BROKEN,
 };
 
+/* The rk3568 CAN-FD errata sheet as of Tue 07 Nov 2023 11:25:31 +08:00
+ * states that only the rk3568v2 is affected by erratum 5, but tests
+ * with the rk3568v2 and rk3568v3 show that the RX_FIFO_CNT is
+ * sometimes too high. In contrast to the errata sheet mark rk3568v3
+ * as effected by erratum 5, too.
+ */
+static const struct rkcanfd_devtype_data rkcanfd_devtype_data_rk3568v3 = {
+	.model = RKCANFD_MODEL_RK3568V3,
+	.quirks = RKCANFD_QUIRK_RK3568_ERRATUM_1 | RKCANFD_QUIRK_RK3568_ERRATUM_2 |
+		RKCANFD_QUIRK_RK3568_ERRATUM_5 | RKCANFD_QUIRK_RK3568_ERRATUM_7 |
+		RKCANFD_QUIRK_RK3568_ERRATUM_8 | RKCANFD_QUIRK_RK3568_ERRATUM_10 |
+		RKCANFD_QUIRK_RK3568_ERRATUM_11 | RKCANFD_QUIRK_RK3568_ERRATUM_12 |
+		RKCANFD_QUIRK_CANFD_BROKEN,
+};
+
 static const char *__rkcanfd_get_model_str(enum rkcanfd_model model)
 {
 	switch (model) {
 	case RKCANFD_MODEL_RK3568V2:
 		return "rk3568v2";
+	case RKCANFD_MODEL_RK3568V3:
+		return "rk3568v3";
 	}
 
 	return "<unknown>";
@@ -764,6 +781,9 @@ static const struct of_device_id rkcanfd_of_match[] = {
 	{
 		.compatible = "rockchip,rk3568v2-canfd",
 		.data = &rkcanfd_devtype_data_rk3568v2,
+	}, {
+		.compatible = "rockchip,rk3568v3-canfd",
+		.data = &rkcanfd_devtype_data_rk3568v3,
 	}, {
 		/* sentinel */
 	},
diff --git a/drivers/net/can/rockchip/rockchip_canfd.h b/drivers/net/can/rockchip/rockchip_canfd.h
index 7321027534fb..9b446331fbd0 100644
--- a/drivers/net/can/rockchip/rockchip_canfd.h
+++ b/drivers/net/can/rockchip/rockchip_canfd.h
@@ -372,6 +372,7 @@
 
 enum rkcanfd_model {
 	RKCANFD_MODEL_RK3568V2 = 0x35682,
+	RKCANFD_MODEL_RK3568V3 = 0x35683,
 };
 
 struct rkcanfd_devtype_data {
-- 
2.45.2