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: 13995020 Received: from smtp.forwardemail.net (smtp.forwardemail.net [121.127.44.59]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 080B425CC6E for ; Thu, 27 Feb 2025 18:52:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=121.127.44.59 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740682336; cv=none; b=R9GcXHfrPtLgzD1AjGPLD/1GTY/v61TqMapgAQ7Su5JJIqDS6KEp/tF+mLAb6vLS1xcOupRJPW+vwdyj0K7fdwwHoBevMWDqSCBDlyndzlJZ7IB9oTE8mukmXPedzqV2wII6EaCa61AH9IuBzu9taf+tGN/rj2GRcQK+VL6wwjE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740682336; c=relaxed/simple; bh=VrMIIw7LPPZy4RoPyOn/553vZWV0shlRFnyQkIIqvFY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=txbcFS55iJmEDN5LAkNhv6ibuFWlmIs6ibfJ0poU2F97HHga6+p9m5bcqz+Da6q2UxUeH5mL0OBC7m5G9/dcObydhaT9WgVf0bkFJfhgIVdquu8U7/GCG+ojhJ65MAJySTWNCfOiYEAsPLKWRV9AS4zLz5AyqkKz+rnDGye0x1s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=kwiboo.se; spf=pass smtp.mailfrom=fe-bounces.kwiboo.se; dkim=pass (2048-bit key) header.d=kwiboo.se header.i=@kwiboo.se header.b=lTXaJgDL; arc=none smtp.client-ip=121.127.44.59 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=kwiboo.se Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=fe-bounces.kwiboo.se Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kwiboo.se header.i=@kwiboo.se header.b="lTXaJgDL" 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=1740682334; bh=pMcozivu7dJDqecE4ZqBly6aZRxhwM+QCDCIXaMvZo0=; b=lTXaJgDLPUApqfZ2L8XwwIlWU2v0fPQBNO1HqV29P9awHkZdSuMfhhT+ypXAjtsUF2SC4NwIB C5S7gqo3dxirwrwO6ou2pr0oSjUEELbK5mYi87FnOVmEIhBRdcyk+LlMcY81LRIJTJK3MBAzQ/6 j6qFxBamHKpgKNCGOiUPTlyOrR/8WrmScLe/4aKNk9YO2+kb76wBCqhFQqKV7mc3hJfQE1Y8nC3 KcmzRaOmgv+xccJvOnRRO3RPQXDGWAmFgFJD6v/BraV/ub/R7kn+EYskK2+dzAKR2foGxr7Abgc oQysiwITTIVKqMJD9Rpdk287hL9LZAUkM8tdMC8RjnQA== X-Forward-Email-ID: 67c0b1d2bf572996e8621499 X-Forward-Email-Sender: rfc822; jonas@kwiboo.se, smtp.forwardemail.net, 121.127.44.59 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> Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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,