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From: Alex Elder <elder@linaro.org>
To: davem@davemloft.net, kuba@kernel.org
Cc: evgreen@chromium.org, subashab@codeaurora.org,
	cpratapa@codeaurora.org, bjorn.andersson@linaro.org,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH net-next 0/2] net: ipa: fix HOLB timer register use
Date: Fri,  3 Jul 2020 16:23:33 -0500	[thread overview]
Message-ID: <20200703212335.465355-1-elder@linaro.org> (raw)

The function ipa_reg_init_hol_block_timer_val() generates the value
to write into the HOL_BLOCK_TIMER endpoint configuration register,
to represent a given timeout value (in microseconds).  It only
supports a timer value of 0 though, in part because that's
sufficient, but mainly because there was some confusion about
how the register is formatted in newer hardware.

I got clarification about the register format, so this series fixes 
ipa_reg_init_hol_block_timer_val() to work for any supported delay
value.

The delay is based on the IPA core clock, so determining the value
to write for a given period requires access to the current core
clock rate.  So the first patch just creates a new function to
provide that.

					-Alex

Alex Elder (2):
  net: ipa: introduce ipa_clock_rate()
  net: ipa: fix HOLB timer calculation

 drivers/net/ipa/ipa_clock.c    |  6 +++
 drivers/net/ipa/ipa_clock.h    |  8 ++++
 drivers/net/ipa/ipa_endpoint.c | 78 +++++++++++++++++++---------------
 3 files changed, 57 insertions(+), 35 deletions(-)

-- 
2.25.1


             reply	other threads:[~2020-07-03 21:23 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-03 21:23 Alex Elder [this message]
2020-07-03 21:23 ` [PATCH net-next 1/2] net: ipa: introduce ipa_clock_rate() Alex Elder
2020-07-03 21:23 ` [PATCH net-next 2/2] net: ipa: fix HOLB timer calculation Alex Elder
2020-07-03 21:37 ` [PATCH net-next 0/2] net: ipa: fix HOLB timer register use David Miller

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