From: Vishwanath Sripathy <vishwanath.bs@ti.com> To: Kevin Hilman <khilman@ti.com> Cc: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Mohan Viswanathan <mohanv@ti.com> Subject: RE: [PATCH 1/4] ARM: OMAP3 PM: Fix IO Daisychain sequence Date: Wed, 5 Oct 2011 09:49:10 +0530 [thread overview] Message-ID: <592e3a0bdb9d2604638d3cf70ff9cc34@mail.gmail.com> (raw) In-Reply-To: <87r52s8owb.fsf@ti.com> > -----Original Message----- > From: Kevin Hilman [mailto:khilman@ti.com] > Sent: Wednesday, October 05, 2011 2:18 AM > To: Vishwanath BS > Cc: linux-omap@vger.kernel.org; linux-arm- > kernel@lists.infradead.org; mohanv@ti.com > Subject: Re: [PATCH 1/4] ARM: OMAP3 PM: Fix IO Daisychain sequence > > Hi Vishwa, > > Vishwanath BS <vishwanath.bs@ti.com> writes: > > > As per OMAP3630 TRM Section 3.5.7.2.2, the right sequence for > enabling IO Daisy > > chain is "The I/O wake-up scheme is enabled by triggering the I/O > daisy chain > > control (Wu clock) by programming a dedicated register > > (PRCM.PM_WKEN_WKUP[16] EN_IO_CHAIN) in the PRCM module.Software > must wait for > > the I/O daisy chain to complete before it transitions the PER > domain to a > > nonfunctional state. This is done by polling a dedicated status > bit in the PRCM > > module (PRCM.PM_WKST_WKUP[16] ST_IO_CHAIN). This status bit must > be cleared by > > software when the bit is read to 1". > > > > The original code was polling on a wrong register which is fixed > in this patch. > > Also omap3_enable_io_chain is made non static as it's going to be > used in > > subsequent patches. > > > > Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com> > > A fix for this was posted[1] by Mohan V (added to Cc) back in June. > It > recieved a few minor comments but an updated version was never > posted. > > Maybe you can ping Mohan or update that version fixing the comments > mentioned in that thread. OK. I will update the original patchset from Mohan with your comments and repost. Vishwa > > Thanks, > > Kevin > > [1] http://marc.info/?l=linux-omap&w=2&r=1&s=%27Mohan+V%27&q=b
WARNING: multiple messages have this Message-ID (diff)
From: vishwanath.bs@ti.com (Vishwanath Sripathy) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 1/4] ARM: OMAP3 PM: Fix IO Daisychain sequence Date: Wed, 5 Oct 2011 09:49:10 +0530 [thread overview] Message-ID: <592e3a0bdb9d2604638d3cf70ff9cc34@mail.gmail.com> (raw) In-Reply-To: <87r52s8owb.fsf@ti.com> > -----Original Message----- > From: Kevin Hilman [mailto:khilman at ti.com] > Sent: Wednesday, October 05, 2011 2:18 AM > To: Vishwanath BS > Cc: linux-omap at vger.kernel.org; linux-arm- > kernel at lists.infradead.org; mohanv at ti.com > Subject: Re: [PATCH 1/4] ARM: OMAP3 PM: Fix IO Daisychain sequence > > Hi Vishwa, > > Vishwanath BS <vishwanath.bs@ti.com> writes: > > > As per OMAP3630 TRM Section 3.5.7.2.2, the right sequence for > enabling IO Daisy > > chain is "The I/O wake-up scheme is enabled by triggering the I/O > daisy chain > > control (Wu clock) by programming a dedicated register > > (PRCM.PM_WKEN_WKUP[16] EN_IO_CHAIN) in the PRCM module.Software > must wait for > > the I/O daisy chain to complete before it transitions the PER > domain to a > > nonfunctional state. This is done by polling a dedicated status > bit in the PRCM > > module (PRCM.PM_WKST_WKUP[16] ST_IO_CHAIN). This status bit must > be cleared by > > software when the bit is read to 1". > > > > The original code was polling on a wrong register which is fixed > in this patch. > > Also omap3_enable_io_chain is made non static as it's going to be > used in > > subsequent patches. > > > > Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com> > > A fix for this was posted[1] by Mohan V (added to Cc) back in June. > It > recieved a few minor comments but an updated version was never > posted. > > Maybe you can ping Mohan or update that version fixing the comments > mentioned in that thread. OK. I will update the original patchset from Mohan with your comments and repost. Vishwa > > Thanks, > > Kevin > > [1] http://marc.info/?l=linux-omap&w=2&r=1&s=%27Mohan+V%27&q=b
next prev parent reply other threads:[~2011-10-05 4:19 UTC|newest] Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top 2011-10-04 17:52 [PATCH 0/4] ARM: OMAP3PLUS PM: Add IO Daisychain support via hwmod mux Vishwanath BS 2011-10-04 17:52 ` Vishwanath BS 2011-10-04 17:52 ` [PATCH 1/4] ARM: OMAP3 PM: Fix IO Daisychain sequence Vishwanath BS 2011-10-04 17:52 ` Vishwanath BS 2011-10-04 18:54 ` Tony Lindgren 2011-10-04 18:54 ` Tony Lindgren 2011-10-04 20:47 ` Kevin Hilman 2011-10-04 20:47 ` Kevin Hilman 2011-10-05 4:19 ` Vishwanath Sripathy [this message] 2011-10-05 4:19 ` Vishwanath Sripathy 2011-10-07 8:19 ` Paul Walmsley 2011-10-07 8:19 ` Paul Walmsley 2011-10-07 10:04 ` Vishwanath Sripathy 2011-10-07 10:04 ` Vishwanath Sripathy 2011-10-04 17:52 ` [PATCH 2/4] ARM: OMAP4 PM: Add IO Daisychain support Vishwanath BS 2011-10-04 17:52 ` Vishwanath BS 2011-10-07 8:13 ` Paul Walmsley 2011-10-07 8:13 ` Paul Walmsley 2011-10-07 10:03 ` Vishwanath Sripathy 2011-10-07 10:03 ` Vishwanath Sripathy 2011-10-04 17:52 ` [PATCH 3/4] ARM: OMAP3 PM: Enable IO Wake up Vishwanath BS 2011-10-04 17:52 ` Vishwanath BS 2011-10-04 17:52 ` [PATCH 4/4] ARM: OMAP3PLUS PM: Add IO Daisychain support via hwmod mux Vishwanath BS 2011-10-04 17:52 ` Vishwanath BS
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=592e3a0bdb9d2604638d3cf70ff9cc34@mail.gmail.com \ --to=vishwanath.bs@ti.com \ --cc=khilman@ti.com \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-omap@vger.kernel.org \ --cc=mohanv@ti.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.