diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/802-can-0020-can-flexcan-add-CAN-FD-BRS-support.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/802-can-0020-can-flexcan-add-CAN-FD-BRS-support.patch | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/802-can-0020-can-flexcan-add-CAN-FD-BRS-support.patch b/target/linux/layerscape/patches-5.4/802-can-0020-can-flexcan-add-CAN-FD-BRS-support.patch new file mode 100644 index 0000000000..d569c7fbb7 --- /dev/null +++ b/target/linux/layerscape/patches-5.4/802-can-0020-can-flexcan-add-CAN-FD-BRS-support.patch @@ -0,0 +1,40 @@ +From 4c26434ac773e37f30ee5a8fa6f7275fe7dabac2 Mon Sep 17 00:00:00 2001 +From: Joakim Zhang <qiangqing.zhang@nxp.com> +Date: Fri, 12 Jul 2019 08:02:47 +0000 +Subject: [PATCH] can: flexcan: add CAN FD BRS support + +This patch adds CAN FD BitRate Switch (BRS) support to driver. + +Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com> +Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> +--- + drivers/net/can/flexcan.c | 9 ++++++++- + 1 file changed, 8 insertions(+), 1 deletion(-) + +--- a/drivers/net/can/flexcan.c ++++ b/drivers/net/can/flexcan.c +@@ -703,9 +703,13 @@ static netdev_tx_t flexcan_start_xmit(st + if (cfd->can_id & CAN_RTR_FLAG) + ctrl |= FLEXCAN_MB_CNT_RTR; + +- if (can_is_canfd_skb(skb)) ++ if (can_is_canfd_skb(skb)) { + ctrl |= FLEXCAN_MB_CNT_EDL; + ++ if (cfd->flags & CANFD_BRS) ++ ctrl |= FLEXCAN_MB_CNT_BRS; ++ } ++ + for (i = 0; i < cfd->len; i += sizeof(u32)) { + data = be32_to_cpup((__be32 *)&cfd->data[i]); + priv->write(data, &priv->tx_mb->data[i / sizeof(u32)]); +@@ -936,6 +940,9 @@ static struct sk_buff *flexcan_mailbox_r + + if (reg_ctrl & FLEXCAN_MB_CNT_EDL) { + cfd->len = can_dlc2len(get_canfd_dlc((reg_ctrl >> 16) & 0xf)); ++ ++ if (reg_ctrl & FLEXCAN_MB_CNT_BRS) ++ cfd->flags |= CANFD_BRS; + } else { + cfd->len = get_can_dlc((reg_ctrl >> 16) & 0xf); + |