From: "Cousson, Benoit" <b-cousson@ti.com>
To: Ricardo Neri <ricardo.neri@ti.com>, paul@pwsan.com
Cc: tony@atomide.com, tomi.valkeinen@ti.com, s-guiriec@ti.com,
mythripk@ti.com, linux-omap@vger.kernel.org
Subject: Re: [PATCH RESEND] ARM: OMAP4: hwmod data: add HWMOD_SWSUP_SIDLE to dss_hdmi to data
Date: Thu, 21 Jun 2012 09:59:53 +0200 [thread overview]
Message-ID: <4FE2D479.5000300@ti.com> (raw)
In-Reply-To: <1340233810-1087-1-git-send-email-ricardo.neri@ti.com>
Hi Ricardo,
Thanks for the update.
On 6/21/2012 1:10 AM, Ricardo Neri wrote:
> As per the OMAP4 documentation, audio over HDMI should be transmitted in
> no-idle mode. This patch adds the HWMOD_SWSUP_SIDLE so that omap_hwmode 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 <ricardo.neri@ti.com>
Acked-by: Benoit Cousson <b-cousson@ti.com>
Paul,
Will you take it as part of your fixes series for 3.5-rc?
Regards,
Benoit
> ---
> arch/arm/mach-omap2/omap_hwmod_44xx_data.c | 5 +++++
> 1 files changed, 5 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
> index 950454a..0cd6ee1 100644
> --- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
> +++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
> @@ -865,6 +865,11 @@ static struct omap_hwmod omap44xx_dss_hdmi_hwmod = {
> },
> .opt_clks = dss_hdmi_opt_clks,
> .opt_clks_cnt = ARRAY_SIZE(dss_hdmi_opt_clks),
> + /*
> + * HDMI audio requires to use no-idle mode. Hence,
> + * set idle mode by software.
> + */
> + .flags = HWMOD_SWSUP_SIDLE,
> };
>
> /*
>
next prev parent reply other threads:[~2012-06-21 8:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-20 23:10 [PATCH RESEND] ARM: OMAP4: hwmod data: add HWMOD_SWSUP_SIDLE to dss_hdmi to data Ricardo Neri
2012-06-21 7:59 ` Cousson, Benoit [this message]
2012-06-21 20:20 ` Paul Walmsley
2012-06-21 8:28 ` Cousson, Benoit
2012-06-21 20:21 ` Paul Walmsley
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