From: Fred Lefranc <hardware.evs@gmail.com>
To: unlisted-recipients:; (no To-header on input)
Cc: Fred Lefranc <hardware.evs@gmail.com>,
Madalin Bucur <madalin.bucur@nxp.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
netdev@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 1/2] net/fsl: fman: Allow fm_max_frame_sz & rx_extra_headroom config from devicetree.
Date: Thu, 17 Feb 2022 17:05:26 +0100 [thread overview]
Message-ID: <20220217160528.2662513-1-hardware.evs@gmail.com> (raw)
Allow modification of two additional Frame Manager parameters :
- FM Max Frame Size : Can be changed to a value other than 1522
(ie support Jumbo Frames)
- RX Extra Headroom
Signed-off-by: Fred Lefranc <hardware.evs@gmail.com>
---
drivers/net/ethernet/freescale/fman/fman.c | 26 ++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/drivers/net/ethernet/freescale/fman/fman.c b/drivers/net/ethernet/freescale/fman/fman.c
index 8f0db61cb1f6..bf4240eacf42 100644
--- a/drivers/net/ethernet/freescale/fman/fman.c
+++ b/drivers/net/ethernet/freescale/fman/fman.c
@@ -2862,6 +2862,32 @@ static struct fman *read_dts_node(struct platform_device *of_dev)
of_property_read_bool(fm_node, "fsl,erratum-a050385");
#endif
+ /* Get Max Frame Size */
+ err = of_property_read_u32(fm_node, "fsl,max-frm-sz", &val);
+ if (!err) {
+ if (val > FSL_FM_MAX_POSSIBLE_FRAME_SIZE)
+ fsl_fm_max_frm = FSL_FM_MAX_POSSIBLE_FRAME_SIZE;
+ else if (val < FSL_FM_MIN_POSSIBLE_FRAME_SIZE)
+ fsl_fm_max_frm = FSL_FM_MIN_POSSIBLE_FRAME_SIZE;
+ else
+ fsl_fm_max_frm = (int)val;
+ }
+ dev_dbg(&of_dev->dev, "Configured Max Frame Size: %d\n",
+ fsl_fm_max_frm);
+
+ /* Get RX Extra Headroom Value */
+ err = of_property_read_u32(fm_node, "fsl,rx-extra-headroom", &val);
+ if (!err) {
+ if (val > FSL_FM_RX_EXTRA_HEADROOM_MAX)
+ fsl_fm_rx_extra_headroom = FSL_FM_RX_EXTRA_HEADROOM_MAX;
+ else if (val < FSL_FM_RX_EXTRA_HEADROOM_MIN)
+ fsl_fm_rx_extra_headroom = FSL_FM_RX_EXTRA_HEADROOM_MIN;
+ else
+ fsl_fm_rx_extra_headroom = (int)val;
+ }
+ dev_dbg(&of_dev->dev, "Configured RX Extra Headroom: %d\n",
+ fsl_fm_rx_extra_headroom);
+
return fman;
fman_node_put:
--
2.25.1
next reply other threads:[~2022-02-17 16:09 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-17 16:05 Fred Lefranc [this message]
2022-02-17 16:05 ` [PATCH 2/2] net/fsl: fman dt binding: add fsl,max-frm-sz & fsl,rx-extra-headroom properties Fred Lefranc
2022-02-18 4:08 ` [PATCH 1/2] net/fsl: fman: Allow fm_max_frame_sz & rx_extra_headroom config from devicetree Jakub Kicinski
2022-02-18 7:23 ` Madalin Bucur
2022-02-18 11:28 ` EVS Hardware Dpt
2022-02-18 11:33 ` Madalin Bucur
2022-02-18 12:28 ` EVS Hardware Dpt
2022-02-25 17:42 ` Rob Herring
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