linux-kernel - [PATCH net-next v3 3/3] net: emaclite: Adopt clock support

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Message-ID: <1728491303-1456171-4-git-send-email-radhey.shyam.pandey@amd.com>
Date: Wed, 9 Oct 2024 21:58:23 +0530
From: Radhey Shyam Pandey <radhey.shyam.pandey@....com>
To: <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
	<pabeni@...hat.com>, <robh@...nel.org>, <krzk+dt@...nel.org>,
	<conor+dt@...nel.org>, <michal.simek@....com>, <harini.katakam@....com>
CC: <netdev@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<git@....com>, Abin Joseph <abin.joseph@....com>, Radhey Shyam Pandey
	<radhey.shyam.pandey@....com>
Subject: [PATCH net-next v3 3/3] net: emaclite: Adopt clock support

From: Abin Joseph <abin.joseph@....com>

Adapt to use the clock framework. Add s_axi_aclk clock from the processor
bus clock domain and make clk optional to keep DTB backward compatibility.

Signed-off-by: Abin Joseph <abin.joseph@....com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@....com>
---
Changes for v3:
- Remove braces around dev_err_probe().

Changes for v2:
- None
---
 drivers/net/ethernet/xilinx/xilinx_emaclite.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/ethernet/xilinx/xilinx_emaclite.c b/drivers/net/ethernet/xilinx/xilinx_emaclite.c
index 418587942527..ecf47107146d 100644
--- a/drivers/net/ethernet/xilinx/xilinx_emaclite.c
+++ b/drivers/net/ethernet/xilinx/xilinx_emaclite.c
@@ -7,6 +7,7 @@
  * Copyright (c) 2007 - 2013 Xilinx, Inc.
  */
 
+#include <linux/clk.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/uaccess.h>
@@ -1091,6 +1092,7 @@ static int xemaclite_of_probe(struct platform_device *ofdev)
 	struct net_device *ndev = NULL;
 	struct net_local *lp = NULL;
 	struct device *dev = &ofdev->dev;
+	struct clk *clkin;
 
 	int rc = 0;
 
@@ -1127,6 +1129,11 @@ static int xemaclite_of_probe(struct platform_device *ofdev)
 	lp->tx_ping_pong = get_bool(ofdev, "xlnx,tx-ping-pong");
 	lp->rx_ping_pong = get_bool(ofdev, "xlnx,rx-ping-pong");
 
+	clkin = devm_clk_get_optional_enabled(&ofdev->dev, NULL);
+	if (IS_ERR(clkin))
+		return dev_err_probe(&ofdev->dev, PTR_ERR(clkin),
+				"Failed to get and enable clock from Device Tree\n");
+
 	rc = of_get_ethdev_address(ofdev->dev.of_node, ndev);
 	if (rc) {
 		dev_warn(dev, "No MAC address found, using random\n");
-- 
2.34.1