From: Adam Ford <aford173@gmail.com>
To: linux-renesas-soc@vger.kernel.org
Cc: aford@beaconembedded.com, Adam Ford <aford173@gmail.com>,
Sergei Shtylyov <sergei.shtylyov@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Magnus Damm <magnus.damm@gmail.com>,
netdev@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH V2 4/4] net: ethernet: ravb: Enable optional refclk
Date: Fri, 15 Jan 2021 14:19:51 -0600 [thread overview]
Message-ID: <20210115201953.443710-4-aford173@gmail.com> (raw)
In-Reply-To: <20210115201953.443710-1-aford173@gmail.com>
For devices that use a programmable clock for the avb reference clock,
the driver may need to enable them. Add code to find the optional clock
and enable it when available.
Signed-off-by: Adam Ford <aford173@gmail.com>
---
drivers/net/ethernet/renesas/ravb.h | 1 +
drivers/net/ethernet/renesas/ravb_main.c | 8 ++++++++
2 files changed, 9 insertions(+)
V2: The previous patch to fetch the fclk was dropped. In its place
is code to enable the refclk
diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
index 7453b17a37a2..ff363797bd2b 100644
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/drivers/net/ethernet/renesas/ravb.h
@@ -994,6 +994,7 @@ struct ravb_private {
struct platform_device *pdev;
void __iomem *addr;
struct clk *clk;
+ struct clk *refclk;
struct mdiobb_ctrl mdiobb;
u32 num_rx_ring[NUM_RX_QUEUE];
u32 num_tx_ring[NUM_TX_QUEUE];
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index bd30505fbc57..739e30f45daa 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -2148,6 +2148,14 @@ static int ravb_probe(struct platform_device *pdev)
goto out_release;
}
+ priv->refclk = devm_clk_get_optional(&pdev->dev, "refclk");
+ if (IS_ERR(priv->refclk)) {
+ error = PTR_ERR(priv->refclk);
+ goto out_release;
+ } else {
+ (void)clk_prepare_enable(priv->refclk);
+ }
+
ndev->max_mtu = 2048 - (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN);
ndev->min_mtu = ETH_MIN_MTU;
--
2.25.1
next prev parent reply other threads:[~2021-01-15 20:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-15 20:19 [PATCH V2 1/4] dt-bindings: net: renesas,etheravb: Add additional clocks Adam Ford
2021-01-15 20:19 ` [PATCH V2 2/4] ARM: dts: renesas: Add fck to etheravb-rcar-gen2 clock-names list Adam Ford
2021-01-15 20:19 ` [PATCH V2 3/4] arm64: dts: renesas: Add fck to etheravb-rcar-gen3 " Adam Ford
2021-01-15 20:19 ` Adam Ford [this message]
2021-01-16 9:55 ` [PATCH V2 4/4] net: ethernet: ravb: Enable optional refclk Sergei Shtylyov
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=20210115201953.443710-4-aford173@gmail.com \
--to=aford173@gmail.com \
--cc=aford@beaconembedded.com \
--cc=davem@davemloft.net \
--cc=devicetree@vger.kernel.org \
--cc=geert+renesas@glider.be \
--cc=kuba@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-renesas-soc@vger.kernel.org \
--cc=magnus.damm@gmail.com \
--cc=netdev@vger.kernel.org \
--cc=robh+dt@kernel.org \
--cc=sergei.shtylyov@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).