From patchwork Thu Feb 27 18:40:51 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonas Karlman X-Patchwork-Id: 13995138 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D53E3C1B087 for ; Thu, 27 Feb 2025 19:43:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=nNkLUiBwCmFRrTR36LpL0EBSGxabSnrz9MPAz5Vjbww=; b=FNzLM9CgfHialz m9fFZYOmM4uLTfsQXqvmdzob9AxPlUzSKUqGYyTrLiGWOHHjDSs6RKWHs1hgjc28+5/Z/TZtPuMZB FXPQ9FembUBSt0lHluFxT1FKeLbE0NhsBokXvwpc1gQ+879bFNkMGcQZrw1OIIUkNPrbEYdw3mTri GS3H16z7xKaTp3sf90HYH2rNvWVkglwwwuqK+R9VFmAkDR7RL/POCNYqf8/mrPlLJ1iYwTCBuhcJg iYrmfKIB2mp4eHyHCoYLuwnDDyw+6kuxQhwuuoqSfN06oF5tGTA731X4yGoZCTUNfqLF9oAiCdA5E 4frD8yqLojNuSRMi1Xfw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tnjmc-00000008dkH-1VEl; Thu, 27 Feb 2025 19:42:58 +0000 Received: from smtp.forwardemail.net ([121.127.44.73]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tnip3-00000008LQv-04im for linux-rockchip@lists.infradead.org; Thu, 27 Feb 2025 18:41:26 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kwiboo.se; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-ID: Date: Subject: Cc: To: From; q=dns/txt; s=fe-e1b5cab7be; t=1740681684; bh=pMcozivu7dJDqecE4ZqBly6aZRxhwM+QCDCIXaMvZo0=; b=mL3qHes2Ri4oHp+X1ggh5/77nJdciqN9DFkP3rOEaxeVTh7sDZ1JEKsukUsejq94EDDpTnAXt i3IyndL6mh+Mlz3Lh35qVDKg+mGOLqepp/JMy5H3JRajtDZgdSxgSakeepCgiyHr3LFZbfXrGRL 4N9jkdaLnWd+Dm2yB38grVNrDv173DsNlXEiiZ4tILVW1ZO1ikxLGsWVp7ioJRQr9ZS57gtAzAa bmUq3+9OGk+vdV7CdgYZmMv/WHExmuo6FiH+qTpNP0Yi1aqOBuwobl6BqfFU64kKgLUcp8If6Yy ivjSFQCs74WC2qdws0nm5mK8/YKnhNzQIiqqesUTI/ug== X-Forward-Email-ID: 67c0b1d2bf572996e8621499 X-Forward-Email-Sender: rfc822; jonas@kwiboo.se, smtp.forwardemail.net, 121.127.44.73 X-Forward-Email-Version: 0.4.40 X-Forward-Email-Website: https://forwardemail.net X-Complaints-To: abuse@forwardemail.net X-Report-Abuse: abuse@forwardemail.net X-Report-Abuse-To: abuse@forwardemail.net From: Jonas Karlman To: Heiko Stuebner , Jonathan Cameron , Lars-Peter Clausen Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yao Zi , linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org, linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Jonas Karlman Subject: [PATCH 2/4] iio: adc: rockchip_saradc: Add support for RK3528 Date: Thu, 27 Feb 2025 18:40:51 +0000 Message-ID: <20250227184058.2964204-3-jonas@kwiboo.se> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250227184058.2964204-1-jonas@kwiboo.se> References: <20250227184058.2964204-1-jonas@kwiboo.se> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250227_104125_151833_26DA02CE X-CRM114-Status: UNSURE ( 8.98 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org The Successive Approximation ADC (SARADC) in RK3528 uses the v2 controller and support: - 10-bit resolution - Up to 1MS/s sampling rate - 4 single-ended input channels - Current consumption: 0.5mA @ 1MS/s Add support for the 4 channels of 10-bit resolution supported by SARADC in RK3528. Signed-off-by: Jonas Karlman --- drivers/iio/adc/rockchip_saradc.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c index a29e54754c8f..2619547d5d6f 100644 --- a/drivers/iio/adc/rockchip_saradc.c +++ b/drivers/iio/adc/rockchip_saradc.c @@ -275,6 +275,21 @@ static const struct rockchip_saradc_data rk3399_saradc_data = { .power_down = rockchip_saradc_power_down_v1, }; +static const struct iio_chan_spec rockchip_rk3528_saradc_iio_channels[] = { + SARADC_CHANNEL(0, "adc0", 10), + SARADC_CHANNEL(1, "adc1", 10), + SARADC_CHANNEL(2, "adc2", 10), + SARADC_CHANNEL(3, "adc3", 10), +}; + +static const struct rockchip_saradc_data rk3528_saradc_data = { + .channels = rockchip_rk3528_saradc_iio_channels, + .num_channels = ARRAY_SIZE(rockchip_rk3528_saradc_iio_channels), + .clk_rate = 1000000, + .start = rockchip_saradc_start_v2, + .read = rockchip_saradc_read_v2, +}; + static const struct iio_chan_spec rockchip_rk3568_saradc_iio_channels[] = { SARADC_CHANNEL(0, "adc0", 10), SARADC_CHANNEL(1, "adc1", 10), @@ -324,6 +339,9 @@ static const struct of_device_id rockchip_saradc_match[] = { }, { .compatible = "rockchip,rk3399-saradc", .data = &rk3399_saradc_data, + }, { + .compatible = "rockchip,rk3528-saradc", + .data = &rk3528_saradc_data, }, { .compatible = "rockchip,rk3568-saradc", .data = &rk3568_saradc_data,