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ARM: OMAP4: hwmod data: Force HDMI in no-idle while enabled

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As per the OMAP4 documentation, audio over HDMI must be transmitted in
no-idle mode. This patch adds the HWMOD_SWSUP_SIDLE so that omap_hwmod uses
no-idle/force-idle settings instead of smart-idle mode.

This is required as the DSS interface clock is used as functional clock
for the HDMI wrapper audio FIFO. If no-idle mode is not used, audio could
be choppy, have bad quality or not be audible at all.

Signed-off-by: Ricardo Neri <[email protected]>
[[email protected]: Update the subject and align the .flags
location with the script template]
Signed-off-by: Benoit Cousson <[email protected]>
Signed-off-by: Paul Walmsley <[email protected]>
This commit is contained in:
Ricardo Neri 2012-06-21 10:08:53 +02:00 • committed by Paul Walmsley
commit dc57aef503
1 changed files with 5 additions and 0 deletions
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5
arch/arm/mach-omap2/omap_hwmod_44xx_data.c
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@ -853,6 +853,11 @@ static struct omap_hwmod omap44xx_dss_hdmi_hwmod = {
.name = "dss_hdmi",
.class = &omap44xx_hdmi_hwmod_class,
.clkdm_name = "l3_dss_clkdm",
/*
* HDMI audio requires to use no-idle mode. Hence,
* set idle mode by software.
*/
.flags = HWMOD_SWSUP_SIDLE,
.mpu_irqs = omap44xx_dss_hdmi_irqs,
.sdma_reqs = omap44xx_dss_hdmi_sdma_reqs,
.main_clk = "dss_48mhz_clk",