Add a basic infrastructure for quirks for the 12 documented errata.
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
---
drivers/net/can/rockchip/rockchip_canfd-core.c | 11 +++++-
drivers/net/can/rockchip/rockchip_canfd.h | 55 ++++++++++++++++++++++++++
2 files changed, 64 insertions(+), 2 deletions(-)
diff --git a/drivers/net/can/rockchip/rockchip_canfd-core.c b/drivers/net/can/rockchip/rockchip_canfd-core.c
index 37183a52682b..961eae352ae4 100644
--- a/drivers/net/can/rockchip/rockchip_canfd-core.c
+++ b/drivers/net/can/rockchip/rockchip_canfd-core.c
@@ -26,6 +26,12 @@
static const struct rkcanfd_devtype_data rkcanfd_devtype_data_rk3568v2 = {
.model = RKCANFD_MODEL_RK3568V2,
+ .quirks = RKCANFD_QUIRK_RK3568_ERRATUM_1 | RKCANFD_QUIRK_RK3568_ERRATUM_2 |
+ RKCANFD_QUIRK_RK3568_ERRATUM_3 | RKCANFD_QUIRK_RK3568_ERRATUM_4 |
+ RKCANFD_QUIRK_RK3568_ERRATUM_5 | RKCANFD_QUIRK_RK3568_ERRATUM_6 |
+ RKCANFD_QUIRK_RK3568_ERRATUM_7 | RKCANFD_QUIRK_RK3568_ERRATUM_8 |
+ RKCANFD_QUIRK_RK3568_ERRATUM_9 | RKCANFD_QUIRK_RK3568_ERRATUM_10 |
+ RKCANFD_QUIRK_RK3568_ERRATUM_11 | RKCANFD_QUIRK_RK3568_ERRATUM_12,
};
static const char *__rkcanfd_get_model_str(enum rkcanfd_model model)
@@ -712,10 +718,11 @@ static void rkcanfd_register_done(const struct rkcanfd_priv *priv)
dev_id = rkcanfd_read(priv, RKCANFD_REG_RTL_VERSION);
netdev_info(priv->ndev,
- "Rockchip-CANFD %s rev%lu.%lu found\n",
+ "Rockchip-CANFD %s rev%lu.%lu (errata 0x%04x) found\n",
rkcanfd_get_model_str(priv),
FIELD_GET(RKCANFD_REG_RTL_VERSION_MAJOR, dev_id),
- FIELD_GET(RKCANFD_REG_RTL_VERSION_MINOR, dev_id));
+ FIELD_GET(RKCANFD_REG_RTL_VERSION_MINOR, dev_id),
+ priv->devtype_data.quirks);
}
static int rkcanfd_register(struct rkcanfd_priv *priv)
diff --git a/drivers/net/can/rockchip/rockchip_canfd.h b/drivers/net/can/rockchip/rockchip_canfd.h
index ad068c08a44e..b267df438a82 100644
--- a/drivers/net/can/rockchip/rockchip_canfd.h
+++ b/drivers/net/can/rockchip/rockchip_canfd.h
@@ -294,12 +294,67 @@
#define RKCANFD_TIMESTAMP_WORK_MAX_DELAY_SEC 60
#define RKCANFD_ERRATUM_5_SYSCLOCK_HZ_MIN (300 * MEGA)
+/* rk3568 CAN-FD Errata, as of Tue 07 Nov 2023 11:25:31 +08:00 */
+
+/* Erratum 1: The error frame sent by the CAN controller has an
+ * abnormal format.
+ */
+#define RKCANFD_QUIRK_RK3568_ERRATUM_1 BIT(0)
+
+/* Erratum 2: The error frame sent after detecting a CRC error has an
+ * abnormal position.
+ */
+#define RKCANFD_QUIRK_RK3568_ERRATUM_2 BIT(1)
+
+/* Erratum 3: Intermittent CRC calculation errors. */
+#define RKCANFD_QUIRK_RK3568_ERRATUM_3 BIT(2)
+
+/* Erratum 4: Intermittent occurrence of stuffing errors. */
+#define RKCANFD_QUIRK_RK3568_ERRATUM_4 BIT(3)
+
+/* Erratum 5: Counters related to the TXFIFO and RXFIFO exhibit
+ * abnormal counting behavior.
+ */
+#define RKCANFD_QUIRK_RK3568_ERRATUM_5 BIT(4)
+
+/* Erratum 6: The CAN controller's transmission of extended frames may
+ * intermittently change into standard frames
+ */
+#define RKCANFD_QUIRK_RK3568_ERRATUM_6 BIT(5)
+
+/* Erratum 7: In the passive error state, the CAN controller's
+ * interframe space segment counting is inaccurate.
+ */
+#define RKCANFD_QUIRK_RK3568_ERRATUM_7 BIT(6)
+
+/* Erratum 8: The Format-Error error flag is transmitted one bit
+ * later.
+ */
+#define RKCANFD_QUIRK_RK3568_ERRATUM_8 BIT(7)
+
+/* Erratum 9: In the arbitration segment, the CAN controller will
+ * identify stuffing errors as arbitration failures.
+ */
+#define RKCANFD_QUIRK_RK3568_ERRATUM_9 BIT(8)
+
+/* Erratum 10: Does not support the BUSOFF slow recovery mechanism. */
+#define RKCANFD_QUIRK_RK3568_ERRATUM_10 BIT(9)
+
+/* Erratum 11: Arbitration error. */
+#define RKCANFD_QUIRK_RK3568_ERRATUM_11 BIT(10)
+
+/* Erratum 12: A dominant bit at the third bit of the intermission may
+ * cause a transmission error.
+ */
+#define RKCANFD_QUIRK_RK3568_ERRATUM_12 BIT(11)
+
enum rkcanfd_model {
RKCANFD_MODEL_RK3568V2 = 0x35682,
};
struct rkcanfd_devtype_data {
enum rkcanfd_model model;
+ u32 quirks;
};
struct rkcanfd_fifo_header {
--
2.43.0
