Return-path: Received: from wolverine01.qualcomm.com ([199.106.114.254]:62239 "EHLO wolverine01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751810Ab2HJQPs (ORCPT ); Fri, 10 Aug 2012 12:15:48 -0400 From: Sujith Manoharan MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Message-ID: <20517.13157.200980.747377@gargle.gargle.HOWL> (sfid-20120810_181552_403459_A0980A58) Date: Fri, 10 Aug 2012 21:44:29 +0530 To: Felix Fietkau CC: , , Subject: [PATCH 3.6 4/4] ath9k_hw: enable PA linearization In-Reply-To: <1344344772-49459-4-git-send-email-nbd@openwrt.org> References: <1344344772-49459-1-git-send-email-nbd@openwrt.org> <1344344772-49459-2-git-send-email-nbd@openwrt.org> <1344344772-49459-3-git-send-email-nbd@openwrt.org> <1344344772-49459-4-git-send-email-nbd@openwrt.org> Sender: linux-wireless-owner@vger.kernel.org List-ID: Felix Fietkau wrote: > This feature had been disabled in ath9k because the code to support > it was incomplete, but now the code is in sync with the internal QCA > codebase, so it's time to enable it. > > On many newer devices, the calibration is assumed to be done with PA > linearization enabled. > > Tests with a particular AR933x device showed that the signal emitted > at full power was highly distorted and unreliable with PA linearization > disabled. With this patch, the signal becomes clear and stability > is improved. PAPRD for AR9462 requires changes to the HW code, can you leave out AR9462 until I come up with the necessary patches ? Sujith