linux-kernel - [PATCH] bus: imx-weim: populate devices on a simple bus

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Message-ID: <1404464441-31755-1-git-send-email-Ying.Liu@freescale.com>
Date:	Fri, 4 Jul 2014 17:00:41 +0800
From:	Liu Ying <Ying.Liu@...escale.com>
To:	<linux-kernel@...r.kernel.org>
CC:	<shawn.guo@...escale.com>, <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH] bus: imx-weim: populate devices on a simple bus

There could be some memory map devices located in
a certain chip select region of the i.MX WEIM.
The devices could be attached to a simple bus(for
example, a AXI bus) whose root node is one child
device tree node of the i.MX WEIM device tree node.
There should be a bridge(very likely, software
transparent) bewteen the i.MX WEIM and the simple bus.
This patch makes the i.MX WEIM driver possible to
populate devices on a simple bus.  In this way, people
may try various IPs(in a FPGA, maybe) outside of i.MX
chips with the i.MX WEIM embedded.

Signed-off-by: Liu Ying <Ying.Liu@...escale.com>
---
 drivers/bus/imx-weim.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/imx-weim.c b/drivers/bus/imx-weim.c
index f8ee13c..75c9681 100644
--- a/drivers/bus/imx-weim.c
+++ b/drivers/bus/imx-weim.c
@@ -162,7 +162,9 @@ static int __init weim_parse_dt(struct platform_device *pdev,
 		}
 	}

-	ret = of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
+	ret = of_platform_populate(pdev->dev.of_node,
+				   of_default_bus_match_table,
+				   NULL, &pdev->dev);
 	if (ret)
 		dev_err(&pdev->dev, "%s fail to create devices.\n",
 			pdev->dev.of_node->full_name);
-- 
1.7.9.5

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