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OMAP: DSS2: Reset LANEx_ULPS_SIG2 bits after use

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LANEx_ULPS_SIG2 bits are left on after entering ULPS. This doesn't cause
any problems currently, as DSI HW is reset when it is enabled. However,
if the reset is not done, operation fails if the bits are still set.

So reset the bits after entering ULPS to ensure operation even without
HW reset.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Tomi Valkeinen 2011-05-31 16:55:47 +03:00
parent e89456773c
commit 8ef0e614b3
1 changed files with 4 additions and 0 deletions
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4
drivers/video/omap2/dss/dsi.c
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@ -3395,6 +3395,10 @@ static int dsi_enter_ulps(struct platform_device *dsidev)
dsi_unregister_isr_cio(dsidev, dsi_completion_handler, &completion,
DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
/* Reset LANEx_ULPS_SIG2 */
REG_FLD_MOD(dsidev, DSI_COMPLEXIO_CFG2, (0 << 0) | (0 << 1) | (0 << 2),
7, 5);
dsi_cio_power(dsidev, DSI_COMPLEXIO_POWER_ULPS);
dsi_if_enable(dsidev, false);