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 9DAEBC43217 for ; Mon, 24 Jan 2022 23:07:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1843430AbiAXXD7 (ORCPT ); Mon, 24 Jan 2022 18:03:59 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:46620 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1578136AbiAXWBq (ORCPT ); Mon, 24 Jan 2022 17:01:46 -0500 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: detlev) with ESMTPSA id 00A691F438FC DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1643061705; bh=NKf8TvwzU0j7IGKB6x0vL0tnEezd/yNb8Y6+kHqjC5k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jnObaf8yIubXRT8EWRCozHf1frnWUj1CvdgrSl+UVhQ0Fws4oJAJlz9/U24/v2C8z UElVzD64if7lhfUNI4TnEQcimOoyvR7h3qLEWEqbgfmdrLIczdPbkgrBN9zP6Pv/K3 1av1cZdI+NN/bjs3ZUbovXOly5dU5eUbWrdXZWuGKobufO0CZLG3/Y/qBAmkugBNyp hfFQG3EDqVrKiASVd/YplS2IHkNYUEO/6BIqRxyKcd+gjXr3DfWLzq1Pvl8uYIRqf9 SYPF1gafP9FCfSAnAMAU7bcYNkg93vPSPpxlVF1I+O3BNK8zPqiUAaFJV+G0GB+65C 3XjM8TU6ZlWoQ== From: Detlev Casanova To: linux-kernel@vger.kernel.org Cc: Dave Stevenson , Liam Girdwood , Mark Brown , Detlev Casanova Subject: [PATCH v3 8/9] regulator/rpi-panel-attiny: Use the regmap cache Date: Mon, 24 Jan 2022 17:01:28 -0500 Message-Id: <20220124220129.158891-9-detlev.casanova@collabora.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220124220129.158891-1-detlev.casanova@collabora.com> References: <20220124220129.158891-1-detlev.casanova@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dave Stevenson The I2C to the Atmel is very fussy, and locks up easily on Pi0-3 particularly on reads. The LCD power status is controlled solely by this driver, so rather than reading it back from the Atmel, use the regmap cache to avoid reading values. Signed-off-by: Dave Stevenson Signed-off-by: Detlev Casanova --- drivers/regulator/rpi-panel-attiny-regulator.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/rpi-panel-attiny-regulator.c b/drivers/regulator/rpi-panel-attiny-regulator.c index 8090b9a485b5..6e408a4b2c21 100644 --- a/drivers/regulator/rpi-panel-attiny-regulator.c +++ b/drivers/regulator/rpi-panel-attiny-regulator.c @@ -76,7 +76,7 @@ static const struct regmap_config attiny_regmap_config = { .val_bits = 8, .disable_locking = 1, .max_register = REG_WRITE_DATA_L, - .cache_type = REGCACHE_NONE, + .cache_type = REGCACHE_RBTREE, }; static int attiny_set_port_state(struct attiny_lcd *state, int reg, u8 val) -- 2.34.1