From: Frank Wunderlich <frank-w@public-files.de>
To: "René van Dorst" <opensource@vdorst.com>,
sean.wang@mediatek.com, f.fainelli@gmail.com,
davem@davemloft.net, matthias.bgg@gmail.com, andrew@lunn.ch,
vivien.didelot@gmail.com
Cc: netdev@vger.kernel.org, john@phrozen.org,
linux-mediatek@lists.infradead.org, linux-mips@vger.kernel.org
Subject: Re: [PATCH v2 net-next 2/2] net: dsa: mt7530: Add MT7621 TRGMII mode support
Date: Thu, 20 Jun 2019 19:32:19 +0200 [thread overview]
Message-ID: <E48021B2-3B82-4630-A9D1-290479988806@public-files.de> (raw)
In-Reply-To: <20190620122155.32078-3-opensource@vdorst.com>
Tested on Bananapi R2 (mt7623) with 5.2-rc5 + net-next
Tested-by: Frank Wunderlich <frank-w@public-files.de>
Am 20. Juni 2019 14:21:55 MESZ schrieb "René van Dorst" <opensource@vdorst.com>:
>This patch add support TRGMII mode for MT7621 internal MT7530 switch.
>MT7621 TRGMII has only one fix speed mode of 1200MBit.
>
>Also adding support for mt7530 25MHz and 40MHz crystal clocksource.
>Values are based on Banana Pi R2 bsp [1].
>
>Don't change MT7623 registers on a MT7621 device.
>
>[1]
>https://github.com/BPI-SINOVOIP/BPI-R2-bsp/blob/master/linux-mt/drivers/net/ethernet/mediatek/gsw_mt7623.c#L769
>
>Signed-off-by: René van Dorst <opensource@vdorst.com>
>---
> drivers/net/dsa/mt7530.c | 46 +++++++++++++++++++++++++++++++---------
> drivers/net/dsa/mt7530.h | 4 ++++
> 2 files changed, 40 insertions(+), 10 deletions(-)
>
>diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
>index c7d352da5448..3181e95586d6 100644
>--- a/drivers/net/dsa/mt7530.c
>+++ b/drivers/net/dsa/mt7530.c
>@@ -428,24 +428,48 @@ static int
> mt7530_pad_clk_setup(struct dsa_switch *ds, int mode)
> {
> struct mt7530_priv *priv = ds->priv;
>- u32 ncpo1, ssc_delta, trgint, i;
>+ u32 ncpo1, ssc_delta, trgint, i, xtal;
>+
>+ xtal = mt7530_read(priv, MT7530_MHWTRAP) & HWTRAP_XTAL_MASK;
>+
>+ if (xtal == HWTRAP_XTAL_20MHZ) {
>+ dev_err(priv->dev,
>+ "%s: MT7530 with a 20MHz XTAL is not supported!\n",
>+ __func__);
>+ return -EINVAL;
>+ }
>
> switch (mode) {
> case PHY_INTERFACE_MODE_RGMII:
> trgint = 0;
>+ /* PLL frequency: 125MHz */
> ncpo1 = 0x0c80;
>- ssc_delta = 0x87;
> break;
> case PHY_INTERFACE_MODE_TRGMII:
> trgint = 1;
>- ncpo1 = 0x1400;
>- ssc_delta = 0x57;
>+ if (priv->id == ID_MT7621) {
>+ /* PLL frequency: 150MHz: 1.2GBit */
>+ if (xtal == HWTRAP_XTAL_40MHZ)
>+ ncpo1 = 0x0780;
>+ if (xtal == HWTRAP_XTAL_25MHZ)
>+ ncpo1 = 0x0a00;
>+ } else { /* PLL frequency: 250MHz: 2.0Gbit */
>+ if (xtal == HWTRAP_XTAL_40MHZ)
>+ ncpo1 = 0x0c80;
>+ if (xtal == HWTRAP_XTAL_25MHZ)
>+ ncpo1 = 0x1400;
>+ }
> break;
> default:
> dev_err(priv->dev, "xMII mode %d not supported\n", mode);
> return -EINVAL;
> }
>
>+ if (xtal == HWTRAP_XTAL_25MHZ)
>+ ssc_delta = 0x57;
>+ else
>+ ssc_delta = 0x87;
>+
> mt7530_rmw(priv, MT7530_P6ECR, P6_INTF_MODE_MASK,
> P6_INTF_MODE(trgint));
>
>@@ -507,7 +531,9 @@ mt7530_pad_clk_setup(struct dsa_switch *ds, int
>mode)
> mt7530_rmw(priv, MT7530_TRGMII_RD(i),
> RD_TAP_MASK, RD_TAP(16));
> else
>- mt7623_trgmii_set(priv, GSW_INTF_MODE, INTF_MODE_TRGMII);
>+ if (priv->id != ID_MT7621)
>+ mt7623_trgmii_set(priv, GSW_INTF_MODE,
>+ INTF_MODE_TRGMII);
>
> return 0;
> }
>@@ -613,13 +639,13 @@ static void mt7530_adjust_link(struct dsa_switch
>*ds, int port,
> struct mt7530_priv *priv = ds->priv;
>
> if (phy_is_pseudo_fixed_link(phydev)) {
>- if (priv->id == ID_MT7530) {
>- dev_dbg(priv->dev, "phy-mode for master device = %x\n",
>- phydev->interface);
>+ dev_dbg(priv->dev, "phy-mode for master device = %x\n",
>+ phydev->interface);
>
>- /* Setup TX circuit incluing relevant PAD and driving */
>- mt7530_pad_clk_setup(ds, phydev->interface);
>+ /* Setup TX circuit incluing relevant PAD and driving */
>+ mt7530_pad_clk_setup(ds, phydev->interface);
>
>+ if (priv->id == ID_MT7530) {
> /* Setup RX circuit, relevant PAD and driving on the
> * host which must be placed after the setup on the
> * device side is all finished.
>diff --git a/drivers/net/dsa/mt7530.h b/drivers/net/dsa/mt7530.h
>index 4331429969fa..bfac90f48102 100644
>--- a/drivers/net/dsa/mt7530.h
>+++ b/drivers/net/dsa/mt7530.h
>@@ -244,6 +244,10 @@ enum mt7530_vlan_port_attr {
>
> /* Register for hw trap status */
> #define MT7530_HWTRAP 0x7800
>+#define HWTRAP_XTAL_MASK (BIT(10) | BIT(9))
>+#define HWTRAP_XTAL_25MHZ (BIT(10) | BIT(9))
>+#define HWTRAP_XTAL_40MHZ (BIT(10))
>+#define HWTRAP_XTAL_20MHZ (BIT(9))
>
> /* Register for hw trap modification */
> #define MT7530_MHWTRAP 0x7804
next prev parent reply other threads:[~2019-06-20 17:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-20 12:21 [PATCH v2 net-next 0/2] net: mediatek: Add MT7621 TRGMII mode support René van Dorst
2019-06-20 12:21 ` [PATCH v2 net-next 1/2] net: ethernet: " René van Dorst
2019-06-20 12:21 ` [PATCH v2 net-next 2/2] net: dsa: mt7530: " René van Dorst
2019-06-20 17:32 ` Frank Wunderlich [this message]
2019-06-20 13:02 ` [PATCH v2 net-next 0/2] net: mediatek: " Frank Wunderlich
2019-06-21 3:55 ` Sean Wang
2019-06-22 23:58 ` David Miller
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=E48021B2-3B82-4630-A9D1-290479988806@public-files.de \
--to=frank-w@public-files.de \
--cc=andrew@lunn.ch \
--cc=davem@davemloft.net \
--cc=f.fainelli@gmail.com \
--cc=john@phrozen.org \
--cc=linux-mediatek@lists.infradead.org \
--cc=linux-mips@vger.kernel.org \
--cc=matthias.bgg@gmail.com \
--cc=netdev@vger.kernel.org \
--cc=opensource@vdorst.com \
--cc=sean.wang@mediatek.com \
--cc=vivien.didelot@gmail.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 NNTP newsgroup(s).