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Commit 26a2ad8a authored by Sean Wang's avatar Sean Wang Committed by David S. Miller
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net: ethernet: mediatek: add controlling power domain the ethernet belongs to 



introduce power domain control which the digital circuit of
the ethernet belongs to inside the flow of hardware initialization
and deinitialization which helps the entire ethernet hardware block
could restart cleanly and completely as being back to the initial
state when the whole machine reboot.

Signed-off-by: default avatarSean Wang <sean.wang@mediatek.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8a8a9e89

drivers/net/ethernet/mediatek/mtk_eth_soc.c

+7 −0
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 
#include <linux/mfd/syscon.h>

#include <linux/regmap.h>

#include <linux/clk.h>

#include <linux/pm_runtime.h>

#include <linux/if_vlan.h>

#include <linux/reset.h>

#include <linux/tcp.h>
@@ -1417,6 +1418,9 @@ static int __init mtk_hw_init(struct mtk_eth *eth) 
{

	int i;



	pm_runtime_enable(eth->dev);

	pm_runtime_get_sync(eth->dev);



	clk_prepare_enable(eth->clks[MTK_CLK_ETHIF]);

	clk_prepare_enable(eth->clks[MTK_CLK_ESW]);

	clk_prepare_enable(eth->clks[MTK_CLK_GP1]);
@@ -1484,6 +1488,9 @@ static int mtk_hw_deinit(struct mtk_eth *eth) 
	clk_disable_unprepare(eth->clks[MTK_CLK_ESW]);

	clk_disable_unprepare(eth->clks[MTK_CLK_ETHIF]);



	pm_runtime_put_sync(eth->dev);

	pm_runtime_disable(eth->dev);



	return 0;

}