From: "Arınç ÜNAL" <arinc.unal@arinc9.com>
To: Daniel Golle <daniel@makrotopia.org>,
DENG Qingfang <dqfext@gmail.com>,
Sean Wang <sean.wang@mediatek.com>, Andrew Lunn <andrew@lunn.ch>,
Florian Fainelli <f.fainelli@gmail.com>,
Vladimir Oltean <olteanv@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>,
Paolo Abeni <pabeni@redhat.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
Russell King <linux@armlinux.org.uk>
Cc: "Bartel Eerdekens" <bartel.eerdekens@constell8.be>,
mithat.guner@xeront.com, erkin.bozoglu@xeront.com,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org,
"Arınç ÜNAL" <arinc.unal@arinc9.com>
Subject: [PATCH net-next v2 15/15] net: dsa: mt7530: explain exposing MDIO bus of MT7531AE better
Date: Mon, 22 Apr 2024 10:15:22 +0300 [thread overview]
Message-ID: <20240422-for-netnext-mt7530-improvements-4-v2-15-a75157ba76ad@arinc9.com> (raw)
In-Reply-To: <20240422-for-netnext-mt7530-improvements-4-v2-0-a75157ba76ad@arinc9.com>
Unlike MT7531BE, the GPIO 6-12 pins are not used for RGMII on MT7531AE.
Therefore, the GPIO 11-12 pins are set to function as MDC and MDIO to
expose the MDIO bus of the switch. Replace the comment with a better
explanation.
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
---
drivers/net/dsa/mt7530.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 1f6cd24de4b7..2b9f904a98f0 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -2635,7 +2635,10 @@ mt7531_setup(struct dsa_switch *ds)
if (!priv->p5_sgmii) {
mt7531_pll_setup(priv);
} else {
- /* Let ds->user_mii_bus be able to access external phy. */
+ /* Unlike MT7531BE, the GPIO 6-12 pins are not used for RGMII on
+ * MT7531AE. Set the GPIO 11-12 pins to function as MDC and MDIO
+ * to expose the MDIO bus of the switch.
+ */
mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO11_RG_RXD2_MASK,
MT7531_EXT_P_MDC_11);
mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO12_RG_RXD3_MASK,
--
2.40.1
prev parent reply other threads:[~2024-04-22 7:15 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-22 7:15 [PATCH net-next v2 00/15] MT7530 DSA Subdriver Improvements Act IV Arınç ÜNAL
2024-04-22 7:15 ` [PATCH net-next v2 01/15] net: dsa: mt7530: disable EEE abilities on failure on MT7531 and MT7988 Arınç ÜNAL
2024-04-22 7:15 ` [PATCH net-next v2 02/15] net: dsa: mt7530: refactor MT7530_PMCR_P() Arınç ÜNAL
2024-04-22 7:15 ` [PATCH net-next v2 03/15] net: dsa: mt7530: rename p5_intf_sel and use only for MT7530 switch Arınç ÜNAL
2024-04-22 7:15 ` [PATCH net-next v2 04/15] net: dsa: mt7530: rename mt753x_bpdu_port_fw enum to mt753x_to_cpu_fw Arınç ÜNAL
2024-04-22 7:15 ` [PATCH net-next v2 05/15] net: dsa: mt7530: refactor MT7530_MFC and MT7531_CFC, add MT7531_QRY_FFP Arınç ÜNAL
2024-04-22 7:15 ` [PATCH net-next v2 06/15] net: dsa: mt7530: refactor MT7530_HWTRAP and MT7530_MHWTRAP Arınç ÜNAL
2024-04-22 7:15 ` [PATCH net-next v2 07/15] net: dsa: mt7530: move MT753X_MTRAP operations for MT7530 Arınç ÜNAL
2024-04-22 7:15 ` [PATCH net-next v2 08/15] net: dsa: mt7530: return mt7530_setup_mdio & mt7531_setup_common on error Arınç ÜNAL
2024-04-22 7:15 ` [PATCH net-next v2 09/15] net: dsa: mt7530: define MAC speed capabilities per switch model Arınç ÜNAL
2024-04-22 7:15 ` [PATCH net-next v2 10/15] net: dsa: mt7530: get rid of function sanity check Arınç ÜNAL
2024-04-22 7:15 ` [PATCH net-next v2 11/15] net: dsa: mt7530: refactor MT7530_PMEEECR_P() Arınç ÜNAL
2024-04-22 7:15 ` [PATCH net-next v2 12/15] net: dsa: mt7530: get rid of mac_port_validate member of mt753x_info Arınç ÜNAL
2024-04-22 7:15 ` [PATCH net-next v2 13/15] net: dsa: mt7530: use priv->ds->num_ports instead of MT7530_NUM_PORTS Arınç ÜNAL
2024-04-22 7:15 ` [PATCH net-next v2 14/15] net: dsa: mt7530: do not pass port variable to mt7531_rgmii_setup() Arınç ÜNAL
2024-04-22 7:15 ` Arınç ÜNAL [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240422-for-netnext-mt7530-improvements-4-v2-15-a75157ba76ad@arinc9.com \
--to=arinc.unal@arinc9.com \
--cc=andrew@lunn.ch \
--cc=angelogioacchino.delregno@collabora.com \
--cc=bartel.eerdekens@constell8.be \
--cc=daniel@makrotopia.org \
--cc=davem@davemloft.net \
--cc=dqfext@gmail.com \
--cc=edumazet@google.com \
--cc=erkin.bozoglu@xeront.com \
--cc=f.fainelli@gmail.com \
--cc=kuba@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mediatek@lists.infradead.org \
--cc=linux@armlinux.org.uk \
--cc=matthias.bgg@gmail.com \
--cc=mithat.guner@xeront.com \
--cc=netdev@vger.kernel.org \
--cc=olteanv@gmail.com \
--cc=pabeni@redhat.com \
--cc=sean.wang@mediatek.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).