From: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
To: <linville@tuxdriver.com>
Cc: <linux-wireless@vger.kernel.org>,
Rajkumar Manoharan <rmanohar@qca.qualcomm.com>,
Felix Fietkau <nbd@openwrt.org>
Subject: [PATCH v3 11/13] ath9k_hw: Disable Walsh spatial spreading for 2 chains
Date: Thu, 4 Aug 2011 23:24:07 +0530 [thread overview]
Message-ID: <1312480447-27483-1-git-send-email-rmanohar@qca.qualcomm.com> (raw)
The Walsh bit is disabled for regulatory consideration.
As per the FCC rulings, only transmissions that are completely
non-coherent, are allowed to waive the array gain contribution
to EIRP for multi-transmit configurations. The use of 2-stream
with 2 transmit and use of 3-steam with 3 transmit qualifies
for this spatial multiplexing MIMO classification as long as
the streams are directly mapped to each radio (not Walsh spread
prior to splitting to multiple radios)
Cc: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
---
.../net/wireless/ath/ath9k/ar9003_2p2_initvals.h | 2 +-
drivers/net/wireless/ath/ath9k/ar9003_phy.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_2p2_initvals.h b/drivers/net/wireless/ath/ath9k/ar9003_2p2_initvals.h
index 2339728..28b44b0 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_2p2_initvals.h
+++ b/drivers/net/wireless/ath/ath9k/ar9003_2p2_initvals.h
@@ -636,7 +636,7 @@ static const u32 ar9300_2p2_baseband_postamble[][5] = {
{0x00009e44, 0x02321e27, 0x02321e27, 0x02291e27, 0x02291e27},
{0x00009e48, 0x5030201a, 0x5030201a, 0x50302012, 0x50302012},
{0x00009fc8, 0x0003f000, 0x0003f000, 0x0001a000, 0x0001a000},
- {0x0000a204, 0x000037c0, 0x000037c4, 0x000037c4, 0x000037c0},
+ {0x0000a204, 0x000036c0, 0x000036c4, 0x000036c4, 0x000036c0},
{0x0000a208, 0x00000104, 0x00000104, 0x00000004, 0x00000004},
{0x0000a22c, 0x01026a2f, 0x01026a2f, 0x01026a2f, 0x01026a2f},
{0x0000a230, 0x0000000a, 0x00000014, 0x00000016, 0x0000000b},
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
index 1baca8e..c906e9e 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
@@ -482,7 +482,7 @@ static void ar9003_hw_set_channel_regs(struct ath_hw *ah,
(REG_READ(ah, AR_PHY_GEN_CTRL) & AR_PHY_GC_ENABLE_DAC_FIFO);
/* Enable 11n HT, 20 MHz */
- phymode = AR_PHY_GC_HT_EN | AR_PHY_GC_SINGLE_HT_LTF1 | AR_PHY_GC_WALSH |
+ phymode = AR_PHY_GC_HT_EN | AR_PHY_GC_SINGLE_HT_LTF1 |
AR_PHY_GC_SHORT_GI_40 | enableDacFifo;
/* Configure baseband for dynamic 20/40 operation */
--
1.7.6
next reply other threads:[~2011-08-04 17:53 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-04 17:54 Rajkumar Manoharan [this message]
2011-08-04 18:23 ` [PATCH v3 11/13] ath9k_hw: Disable Walsh spatial spreading for 2 chains Felix Fietkau
2011-08-05 2:54 ` Rajkumar Manoharan
2011-08-05 6:35 ` Adrian Chadd
2011-08-05 7:24 ` Rajkumar Manoharan
2011-08-05 8:36 ` Rajkumar Manoharan
2011-08-05 9:48 ` Felix Fietkau
2011-08-05 11:50 ` Adrian Chadd
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=1312480447-27483-1-git-send-email-rmanohar@qca.qualcomm.com \
--to=rmanohar@qca.qualcomm.com \
--cc=linux-wireless@vger.kernel.org \
--cc=linville@tuxdriver.com \
--cc=nbd@openwrt.org \
/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: link
Be 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.