From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AD27EC43217 for ; Mon, 30 May 2022 14:32:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240431AbiE3OcD (ORCPT ); Mon, 30 May 2022 10:32:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44832 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242447AbiE3ObH (ORCPT ); Mon, 30 May 2022 10:31:07 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D6F4974DE8; Mon, 30 May 2022 06:52:59 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 3ED6761036; Mon, 30 May 2022 13:52:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3CAF9C36AE3; Mon, 30 May 2022 13:52:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1653918755; bh=6GPI7gYf07+zFN1Ol/tp6iH7PZSLrK3qLnRFMdReihY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fjCKlOG3foCQcS9JIAywYFHoPv6KScHEVAAdx3eG2R0nEQRQc4+mJwmwo/+lGbwul XncUW5yQ1eGS8V2HrKrpaNS8Vw2an4SW2KyrSpPAccnU0HTS1Mwo8Hmbn/BwlcZYQ5 FfrTGuVLhpS54V8Ntu28MLIeDvVq9lz9dd0gIO3pbS2iv4vqCcaEJt9c5+zMpEFVPT zZZYgaOg0HKmdjBhkvtACQr6NUJlqMeAeNipdamLOFPb+e+cEILb3ZZQ2pqPBX1VHN 1azXvXgHla5VJ82K7JZrhIMN+m1WwDn/vAZS8aC763n10k85hxQP/ODfDh2JTnD3lp LWDjCO47BKX4A== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: =?UTF-8?q?Thibaut=20VAR=C3=88NE?= , Felix Fietkau , =?UTF-8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= , Kalle Valo , Sasha Levin , kvalo@kernel.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, linux-wireless@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 09/24] ath9k: fix QCA9561 PA bias level Date: Mon, 30 May 2022 09:51:56 -0400 Message-Id: <20220530135211.1937674-9-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220530135211.1937674-1-sashal@kernel.org> References: <20220530135211.1937674-1-sashal@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Thibaut VARÈNE [ Upstream commit e999a5da28a0e0f7de242d841ef7d5e48f4646ae ] This patch fixes an invalid TX PA DC bias level on QCA9561, which results in a very low output power and very low throughput as devices are further away from the AP (compared to other 2.4GHz APs). This patch was suggested by Felix Fietkau, who noted[1]: "The value written to that register is wrong, because while the mask definition AR_CH0_TOP2_XPABIASLVL uses a different value for 9561, the shift definition AR_CH0_TOP2_XPABIASLVL_S is hardcoded to 12, which is wrong for 9561." In real life testing, without this patch the 2.4GHz throughput on Yuncore XD3200 is around 10Mbps sitting next to the AP, and closer to practical maximum with the patch applied. [1] https://lore.kernel.org/all/91c58969-c60e-2f41-00ac-737786d435ae@nbd.name Signed-off-by: Thibaut VARÈNE Acked-by: Felix Fietkau Acked-by: Toke Høiland-Jørgensen Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20220417145145.1847-1-hacks+kernel@slashdirt.org Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/ath9k/ar9003_phy.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.h b/drivers/net/wireless/ath/ath9k/ar9003_phy.h index a171dbb29fbb..ad949eb02f3d 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_phy.h +++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.h @@ -720,7 +720,7 @@ #define AR_CH0_TOP2 (AR_SREV_9300(ah) ? 0x1628c : \ (AR_SREV_9462(ah) ? 0x16290 : 0x16284)) #define AR_CH0_TOP2_XPABIASLVL (AR_SREV_9561(ah) ? 0x1e00 : 0xf000) -#define AR_CH0_TOP2_XPABIASLVL_S 12 +#define AR_CH0_TOP2_XPABIASLVL_S (AR_SREV_9561(ah) ? 9 : 12) #define AR_CH0_XTAL (AR_SREV_9300(ah) ? 0x16294 : \ ((AR_SREV_9462(ah) || AR_SREV_9565(ah)) ? 0x16298 : \ -- 2.35.1