From patchwork Sat May 6 07:30:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maksim Kiselev X-Patchwork-Id: 679729 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 5CF40C77B7F for ; Sat, 6 May 2023 07:32:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231255AbjEFHcd (ORCPT ); Sat, 6 May 2023 03:32:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38138 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231253AbjEFHcQ (ORCPT ); Sat, 6 May 2023 03:32:16 -0400 Received: from mail-wm1-x32c.google.com (mail-wm1-x32c.google.com [IPv6:2a00:1450:4864:20::32c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C33EC11B7B; Sat, 6 May 2023 00:32:06 -0700 (PDT) Received: by mail-wm1-x32c.google.com with SMTP id 5b1f17b1804b1-3f4000ec71dso17630405e9.2; Sat, 06 May 2023 00:32:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1683358325; x=1685950325; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=0/p1ytnQh6YEGVhEhqDXJrPOG30ZOWl4FCmbFIXesQs=; b=bHsdH9QLBx95JODO+aI3BTZ9JpWH80AULgNrIwX35ln3QWMnNrfyonN+IEHO3a2qXT zQayMOl3UCEcpbg7SLIxbGxSaxH7wpxwpx3k6GfGLVqIOq34mTLj/N+WmeALlM/BV8QJ 1Yg5TejIXbppSec1n7g550mo+9+Ow80CwC8KhpOwO5B33fezYPoOP1ue2+MnAAhZR7aN JYTD8eG2esMfafDyBkIrl8YCg2DAoQqQYOlOqcRt0aAiXAXbBP9eR0f06G21todRHxqn emMzyrfrkGuzCNT+6qaxL0Pc0Ktrb3COiRtiFN7x/LlK6Ftkp/pBQI9OGoIAW5IOERVy l0fA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683358325; x=1685950325; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=0/p1ytnQh6YEGVhEhqDXJrPOG30ZOWl4FCmbFIXesQs=; b=MbJ39SrwMDx6Y0V+47CqUU1VwXu/V1pJGTCMRKNwHXbmZOqhGgkXBuLSnenGxklBRy jMHBKJTKTSnSgDaIWlQgDNt+Vih42lfK0tDfiR+kgy5CimlBLZhjQwCfuCn3iGIdxLrx B41IQXdqz9WsGKaIwOs64Q70ksea8pXQ02WNg1fQnQusDUD/K0bQ4TmxDsEYaqC+wToK njdQNU/vibBhZi0EN7NuQmbAkvAnZqqItbXFglSgbXoHEyuzHGwJBAJBiHg7GRZIydI+ rv+EBF3Yqgj9p2M4k7ke3vmH5cV1RQFkOoFrj8m5L3r1vjxVSZXX47ykKdYKkqgFMdiL 5tnw== X-Gm-Message-State: AC+VfDzaqgevYnwcVfundZnREjXL2trrez6S+BC6OHjIosaUjnRdjgpm ih3L3fW2oMuMCiIaXH7/FiE= X-Google-Smtp-Source: ACHHUZ6JTn71OUBh2OirtFdnyg6dCjdW09TDzjxul9OlyXa2r6klaU6in0h6LXx3WvVWtVJrCWb40w== X-Received: by 2002:a7b:cb53:0:b0:3f2:53a5:d308 with SMTP id v19-20020a7bcb53000000b003f253a5d308mr2586133wmj.6.1683358324784; Sat, 06 May 2023 00:32:04 -0700 (PDT) Received: from localhost.localdomain ([176.221.215.212]) by smtp.gmail.com with ESMTPSA id q14-20020a7bce8e000000b003f182a10106sm10071944wmj.8.2023.05.06.00.32.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 06 May 2023 00:32:04 -0700 (PDT) From: Maksim Kiselev To: Andre Przywara Cc: Icenowy Zheng , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Paul Walmsley , Palmer Dabbelt , Albert Ou , Cristian Ciocaltea , Heiko Stuebner , Maksim Kiselev , Maxime Ripard , linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [PATCH v2 1/6] dt-bindings: spi: sun6i: add DT bindings for Allwinner R329 SPI Date: Sat, 6 May 2023 10:30:09 +0300 Message-Id: <20230506073018.1411583-2-bigunclemax@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230506073018.1411583-1-bigunclemax@gmail.com> References: <20230506073018.1411583-1-bigunclemax@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org From: Icenowy Zheng Allwinner R329 SPI has two controllers, and the second one has helper functions for MIPI-DBI Type C. Add compatible strings for these controllers Signed-off-by: Icenowy Zheng --- .../devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml b/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml index de36c6a34a0f..2c1b8da35339 100644 --- a/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml +++ b/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml @@ -21,6 +21,8 @@ properties: oneOf: - const: allwinner,sun6i-a31-spi - const: allwinner,sun8i-h3-spi + - const: allwinner,sun50i-r329-spi + - const: allwinner,sun50i-r329-spi-dbi - items: - enum: - allwinner,sun8i-r40-spi From patchwork Sat May 6 07:30:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maksim Kiselev X-Patchwork-Id: 679892 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 7C608C7EE22 for ; Sat, 6 May 2023 07:32:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231443AbjEFHc5 (ORCPT ); Sat, 6 May 2023 03:32:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38796 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231461AbjEFHce (ORCPT ); Sat, 6 May 2023 03:32:34 -0400 Received: from mail-wm1-x32b.google.com (mail-wm1-x32b.google.com [IPv6:2a00:1450:4864:20::32b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 33B599008; Sat, 6 May 2023 00:32:16 -0700 (PDT) Received: by mail-wm1-x32b.google.com with SMTP id 5b1f17b1804b1-3f41dceb9c9so434965e9.3; Sat, 06 May 2023 00:32:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1683358333; x=1685950333; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=gtohzT2EHad7nVnKEeCVnIgAjWzLPr61fqJap2+XB2o=; b=GPxZzdu5+SxHeplnw8OAVpVAdzhB8u2XEM1r+e5AzCFINJId8ePhkjY04Rg6OM7ODu 9StIMOYjGfUkuVZNjoM3kcYUZUgpvht9FH9LWucNgec8shszhV3BqT4tzSjXju8Crxfw 31KK3r+vn7qfz6p6919qbYoQTN0PyxqYCG5tOcXcChWf8C3iHnaN5UbXrryCgWaniKXr 0fnDhoulLevntSROKhUdnNtfMUvkkurVc1KAGUPEzEeNlLZhLQIULGOpC3XkE1kSxTQl lITQRJ/C3XtgKnv2fs20eQRH444MsG8/JrApVAJkzXwZZiP/NgpYtLAdpHkZYI9Xtacl aDsw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683358333; x=1685950333; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=gtohzT2EHad7nVnKEeCVnIgAjWzLPr61fqJap2+XB2o=; b=RHyeUMBGzCgiYnDYJd36RmxrOVbiSJ61rrkHN9R7KqfX6fGzrWacmI0zZ4dlZslXnc 16vgaEhXHpOQbxboNNw44hN572N2x9WP9GmHrI8AOHvCOUrnDC7sWPSqh8h9c3OCFuE1 WJRF0gggpJg8d6OU2598ib5yE1sQMlzGE9/8yPE66M+MI4o1dmfOUNiONu6gmK/UOFlN EoEhNDCynW4WZpjuIXtLUYNTewItQarKEpCVZlhb2owwGQSDdFUBUEohbbqNLpl7yq8K h2DiLLhc16K4bWnCR6g+sVAQykhHnHWvmrj6U01AgRIlizQtXWgnUEcvyTXIXbRJmdaj 1wQg== X-Gm-Message-State: AC+VfDwTNbOq+zmb11Qk28ky2MjjtjoVh0qNPoDSwsXhN8fBtM3OEYu9 5X69rN/PsmdIhGSovFlPCRw= X-Google-Smtp-Source: ACHHUZ6Kx3Pt9t+hazzzf0oJQEZnB97KKRY1yEStsNqIdTdpP243ByTp69bvLvIbZUSLe8Mc80IwVA== X-Received: by 2002:a1c:ed03:0:b0:3f1:e5f2:5e86 with SMTP id l3-20020a1ced03000000b003f1e5f25e86mr2668823wmh.23.1683358333153; Sat, 06 May 2023 00:32:13 -0700 (PDT) Received: from localhost.localdomain ([176.221.215.212]) by smtp.gmail.com with ESMTPSA id q14-20020a7bce8e000000b003f182a10106sm10071944wmj.8.2023.05.06.00.32.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 06 May 2023 00:32:12 -0700 (PDT) From: Maksim Kiselev To: Andre Przywara Cc: Icenowy Zheng , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Paul Walmsley , Palmer Dabbelt , Albert Ou , Cristian Ciocaltea , Maksim Kiselev , Maxime Ripard , linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [PATCH v2 2/6] spi: sun6i: change OF match data to a struct Date: Sat, 6 May 2023 10:30:10 +0300 Message-Id: <20230506073018.1411583-3-bigunclemax@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230506073018.1411583-1-bigunclemax@gmail.com> References: <20230506073018.1411583-1-bigunclemax@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org From: Icenowy Zheng As we're adding more properties to the OF match data, convert it to a struct now. Signed-off-by: Icenowy Zheng --- drivers/spi/spi-sun6i.c | 32 ++++++++++++++++++++++---------- 1 file changed, 22 insertions(+), 10 deletions(-) diff --git a/drivers/spi/spi-sun6i.c b/drivers/spi/spi-sun6i.c index 7532c85a352c..01a01cd86db5 100644 --- a/drivers/spi/spi-sun6i.c +++ b/drivers/spi/spi-sun6i.c @@ -85,6 +85,10 @@ #define SUN6I_TXDATA_REG 0x200 #define SUN6I_RXDATA_REG 0x300 +struct sun6i_spi_cfg { + unsigned long fifo_depth; +}; + struct sun6i_spi { struct spi_master *master; void __iomem *base_addr; @@ -99,7 +103,7 @@ struct sun6i_spi { const u8 *tx_buf; u8 *rx_buf; int len; - unsigned long fifo_depth; + const struct sun6i_spi_cfg *cfg; }; static inline u32 sun6i_spi_read(struct sun6i_spi *sspi, u32 reg) @@ -156,7 +160,7 @@ static inline void sun6i_spi_fill_fifo(struct sun6i_spi *sspi) u8 byte; /* See how much data we can fit */ - cnt = sspi->fifo_depth - sun6i_spi_get_tx_fifo_count(sspi); + cnt = sspi->cfg->fifo_depth - sun6i_spi_get_tx_fifo_count(sspi); len = min((int)cnt, sspi->len); @@ -289,14 +293,14 @@ static int sun6i_spi_transfer_one(struct spi_master *master, * the hardcoded value used in old generation of Allwinner * SPI controller. (See spi-sun4i.c) */ - trig_level = sspi->fifo_depth / 4 * 3; + trig_level = sspi->cfg->fifo_depth / 4 * 3; } else { /* * Setup FIFO DMA request trigger level * We choose 1/2 of the full fifo depth, that value will * be used as DMA burst length. */ - trig_level = sspi->fifo_depth / 2; + trig_level = sspi->cfg->fifo_depth / 2; if (tfr->tx_buf) reg |= SUN6I_FIFO_CTL_TF_DRQ_EN; @@ -410,9 +414,9 @@ static int sun6i_spi_transfer_one(struct spi_master *master, reg = SUN6I_INT_CTL_TC; if (!use_dma) { - if (rx_len > sspi->fifo_depth) + if (rx_len > sspi->cfg->fifo_depth) reg |= SUN6I_INT_CTL_RF_RDY; - if (tx_len > sspi->fifo_depth) + if (tx_len > sspi->cfg->fifo_depth) reg |= SUN6I_INT_CTL_TF_ERQ; } @@ -543,7 +547,7 @@ static bool sun6i_spi_can_dma(struct spi_master *master, * the fifo length we can just fill the fifo and wait for a single * irq, so don't bother setting up dma */ - return xfer->len > sspi->fifo_depth; + return xfer->len > sspi->cfg->fifo_depth; } static int sun6i_spi_probe(struct platform_device *pdev) @@ -582,7 +586,7 @@ static int sun6i_spi_probe(struct platform_device *pdev) } sspi->master = master; - sspi->fifo_depth = (unsigned long)of_device_get_match_data(&pdev->dev); + sspi->cfg = of_device_get_match_data(&pdev->dev); master->max_speed_hz = 100 * 1000 * 1000; master->min_speed_hz = 3 * 1000; @@ -695,9 +699,17 @@ static void sun6i_spi_remove(struct platform_device *pdev) dma_release_channel(master->dma_rx); } +static const struct sun6i_spi_cfg sun6i_a31_spi_cfg = { + .fifo_depth = SUN6I_FIFO_DEPTH, +}; + +static const struct sun6i_spi_cfg sun8i_h3_spi_cfg = { + .fifo_depth = SUN8I_FIFO_DEPTH, +}; + static const struct of_device_id sun6i_spi_match[] = { - { .compatible = "allwinner,sun6i-a31-spi", .data = (void *)SUN6I_FIFO_DEPTH }, - { .compatible = "allwinner,sun8i-h3-spi", .data = (void *)SUN8I_FIFO_DEPTH }, + { .compatible = "allwinner,sun6i-a31-spi", .data = &sun6i_a31_spi_cfg }, + { .compatible = "allwinner,sun8i-h3-spi", .data = &sun8i_h3_spi_cfg }, {} }; MODULE_DEVICE_TABLE(of, sun6i_spi_match); From patchwork Sat May 6 07:30:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maksim Kiselev X-Patchwork-Id: 679728 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 5207EC77B75 for ; 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Sat, 06 May 2023 00:32:22 -0700 (PDT) Received: from localhost.localdomain ([176.221.215.212]) by smtp.gmail.com with ESMTPSA id q14-20020a7bce8e000000b003f182a10106sm10071944wmj.8.2023.05.06.00.32.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 06 May 2023 00:32:21 -0700 (PDT) From: Maksim Kiselev To: Andre Przywara Cc: Icenowy Zheng , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Paul Walmsley , Palmer Dabbelt , Albert Ou , Cristian Ciocaltea , Heiko Stuebner , Maksim Kiselev , Maxime Ripard , linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [PATCH v2 3/6] spi: sun6i: add quirk for in-controller clock divider Date: Sat, 6 May 2023 10:30:11 +0300 Message-Id: <20230506073018.1411583-4-bigunclemax@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230506073018.1411583-1-bigunclemax@gmail.com> References: <20230506073018.1411583-1-bigunclemax@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org From: Icenowy Zheng Previously SPI controllers in Allwinner SoCs has a clock divider inside. However now the clock divider is removed and to set the transfer clock rate it's only needed to set the SPI module clock to the target value. Add a quirk for this kind of SPI controllers. Signed-off-by: Icenowy Zheng --- drivers/spi/spi-sun6i.c | 68 +++++++++++++++++++++++------------------ 1 file changed, 38 insertions(+), 30 deletions(-) diff --git a/drivers/spi/spi-sun6i.c b/drivers/spi/spi-sun6i.c index 01a01cd86db5..82523011a3a5 100644 --- a/drivers/spi/spi-sun6i.c +++ b/drivers/spi/spi-sun6i.c @@ -87,6 +87,7 @@ struct sun6i_spi_cfg { unsigned long fifo_depth; + bool has_clk_ctl; }; struct sun6i_spi { @@ -260,7 +261,7 @@ static int sun6i_spi_transfer_one(struct spi_master *master, struct spi_transfer *tfr) { struct sun6i_spi *sspi = spi_master_get_devdata(master); - unsigned int mclk_rate, div, div_cdr1, div_cdr2, timeout; + unsigned int div, div_cdr1, div_cdr2, timeout; unsigned int start, end, tx_time; unsigned int trig_level; unsigned int tx_len = 0, rx_len = 0; @@ -350,39 +351,44 @@ static int sun6i_spi_transfer_one(struct spi_master *master, sun6i_spi_write(sspi, SUN6I_TFR_CTL_REG, reg); - /* Ensure that we have a parent clock fast enough */ - mclk_rate = clk_get_rate(sspi->mclk); - if (mclk_rate < (2 * tfr->speed_hz)) { - clk_set_rate(sspi->mclk, 2 * tfr->speed_hz); - mclk_rate = clk_get_rate(sspi->mclk); - } + if (sspi->cfg->has_clk_ctl) { + unsigned int mclk_rate = clk_get_rate(sspi->mclk); + /* Ensure that we have a parent clock fast enough */ + if (mclk_rate < (2 * tfr->speed_hz)) { + clk_set_rate(sspi->mclk, 2 * tfr->speed_hz); + mclk_rate = clk_get_rate(sspi->mclk); + } - /* - * Setup clock divider. - * - * We have two choices there. Either we can use the clock - * divide rate 1, which is calculated thanks to this formula: - * SPI_CLK = MOD_CLK / (2 ^ cdr) - * Or we can use CDR2, which is calculated with the formula: - * SPI_CLK = MOD_CLK / (2 * (cdr + 1)) - * Wether we use the former or the latter is set through the - * DRS bit. - * - * First try CDR2, and if we can't reach the expected - * frequency, fall back to CDR1. - */ - div_cdr1 = DIV_ROUND_UP(mclk_rate, tfr->speed_hz); - div_cdr2 = DIV_ROUND_UP(div_cdr1, 2); - if (div_cdr2 <= (SUN6I_CLK_CTL_CDR2_MASK + 1)) { - reg = SUN6I_CLK_CTL_CDR2(div_cdr2 - 1) | SUN6I_CLK_CTL_DRS; - tfr->effective_speed_hz = mclk_rate / (2 * div_cdr2); + /* + * Setup clock divider. + * + * We have two choices there. Either we can use the clock + * divide rate 1, which is calculated thanks to this formula: + * SPI_CLK = MOD_CLK / (2 ^ cdr) + * Or we can use CDR2, which is calculated with the formula: + * SPI_CLK = MOD_CLK / (2 * (cdr + 1)) + * Wether we use the former or the latter is set through the + * DRS bit. + * + * First try CDR2, and if we can't reach the expected + * frequency, fall back to CDR1. + */ + div_cdr1 = DIV_ROUND_UP(mclk_rate, tfr->speed_hz); + div_cdr2 = DIV_ROUND_UP(div_cdr1, 2); + if (div_cdr2 <= (SUN6I_CLK_CTL_CDR2_MASK + 1)) { + reg = SUN6I_CLK_CTL_CDR2(div_cdr2 - 1) | SUN6I_CLK_CTL_DRS; + tfr->effective_speed_hz = mclk_rate / (2 * div_cdr2); + } else { + div = min(SUN6I_CLK_CTL_CDR1_MASK, order_base_2(div_cdr1)); + reg = SUN6I_CLK_CTL_CDR1(div); + tfr->effective_speed_hz = mclk_rate / (1 << div); + } + + sun6i_spi_write(sspi, SUN6I_CLK_CTL_REG, reg); } else { - div = min(SUN6I_CLK_CTL_CDR1_MASK, order_base_2(div_cdr1)); - reg = SUN6I_CLK_CTL_CDR1(div); - tfr->effective_speed_hz = mclk_rate / (1 << div); + clk_set_rate(sspi->mclk, tfr->speed_hz); } - sun6i_spi_write(sspi, SUN6I_CLK_CTL_REG, reg); /* Finally enable the bus - doing so before might raise SCK to HIGH */ reg = sun6i_spi_read(sspi, SUN6I_GBL_CTL_REG); reg |= SUN6I_GBL_CTL_BUS_ENABLE; @@ -701,10 +707,12 @@ static void sun6i_spi_remove(struct platform_device *pdev) static const struct sun6i_spi_cfg sun6i_a31_spi_cfg = { .fifo_depth = SUN6I_FIFO_DEPTH, + .has_clk_ctl = true, }; static const struct sun6i_spi_cfg sun8i_h3_spi_cfg = { .fifo_depth = SUN8I_FIFO_DEPTH, + .has_clk_ctl = true, }; static const struct of_device_id sun6i_spi_match[] = { From patchwork Sat May 6 07:30:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maksim Kiselev X-Patchwork-Id: 679891 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 D17B6C7EE22 for ; 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Sat, 06 May 2023 00:32:33 -0700 (PDT) Received: from localhost.localdomain ([176.221.215.212]) by smtp.gmail.com with ESMTPSA id q14-20020a7bce8e000000b003f182a10106sm10071944wmj.8.2023.05.06.00.32.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 06 May 2023 00:32:32 -0700 (PDT) From: Maksim Kiselev To: Andre Przywara Cc: Icenowy Zheng , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Paul Walmsley , Palmer Dabbelt , Albert Ou , Cristian Ciocaltea , Greg Kroah-Hartman , Maksim Kiselev , Maxime Ripard , linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [PATCH v2 4/6] spi: sun6i: add support for R329 SPI controllers Date: Sat, 6 May 2023 10:30:12 +0300 Message-Id: <20230506073018.1411583-5-bigunclemax@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230506073018.1411583-1-bigunclemax@gmail.com> References: <20230506073018.1411583-1-bigunclemax@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org From: Icenowy Zheng R329 has two SPI controllers. One of it is quite similar to previous ones, but with internal clock divider removed; the other added MIPI DBI Type-C offload based on the first one. Add basical support for these controllers. As we're not going to support the DBI functionality now, just implement the two kinds of controllers as the same. Signed-off-by: Icenowy Zheng --- drivers/spi/spi-sun6i.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/spi/spi-sun6i.c b/drivers/spi/spi-sun6i.c index 82523011a3a5..fe287a45df9b 100644 --- a/drivers/spi/spi-sun6i.c +++ b/drivers/spi/spi-sun6i.c @@ -715,9 +715,21 @@ static const struct sun6i_spi_cfg sun8i_h3_spi_cfg = { .has_clk_ctl = true, }; +static const struct sun6i_spi_cfg sun50i_r329_spi_cfg = { + .fifo_depth = SUN8I_FIFO_DEPTH, +}; + static const struct of_device_id sun6i_spi_match[] = { { .compatible = "allwinner,sun6i-a31-spi", .data = &sun6i_a31_spi_cfg }, { .compatible = "allwinner,sun8i-h3-spi", .data = &sun8i_h3_spi_cfg }, + { + .compatible = "allwinner,sun50i-r329-spi", + .data = &sun50i_r329_spi_cfg + }, + { + .compatible = "allwinner,sun50i-r329-spi-dbi", + .data = &sun50i_r329_spi_cfg + }, {} }; MODULE_DEVICE_TABLE(of, sun6i_spi_match); From patchwork Sat May 6 07:30:13 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maksim Kiselev X-Patchwork-Id: 679727 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 D9D2BC7EE22 for ; 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Sat, 06 May 2023 00:32:42 -0700 (PDT) Received: from localhost.localdomain ([176.221.215.212]) by smtp.gmail.com with ESMTPSA id q14-20020a7bce8e000000b003f182a10106sm10071944wmj.8.2023.05.06.00.32.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 06 May 2023 00:32:41 -0700 (PDT) From: Maksim Kiselev To: Andre Przywara Cc: Icenowy Zheng , Maksim Kiselev , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Paul Walmsley , Palmer Dabbelt , Albert Ou , Cristian Ciocaltea , Maxime Ripard , linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [PATCH v2 5/6] dt-bindings: spi: sun6i: add DT bindings for Allwinner D1/R528/T113s SPI Date: Sat, 6 May 2023 10:30:13 +0300 Message-Id: <20230506073018.1411583-6-bigunclemax@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230506073018.1411583-1-bigunclemax@gmail.com> References: <20230506073018.1411583-1-bigunclemax@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Allwinner D1/R528/T113s SPI has the same as R329 controllers Add compatible string for this controller Signed-off-by: Maksim Kiselev --- .../devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml b/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml index 2c1b8da35339..164bd6af9299 100644 --- a/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml +++ b/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml @@ -30,6 +30,10 @@ properties: - allwinner,sun50i-h616-spi - allwinner,suniv-f1c100s-spi - const: allwinner,sun8i-h3-spi + - items: + - enum: + - allwinner,sun20i-d1-spi + - const: allwinner,sun50i-r329-spi reg: maxItems: 1 From patchwork Sat May 6 07:30:14 2023 Content-Type: text/plain; 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This controller is the same for R329/D1/R528/T113s SoCs and should be supported by the sun50i-r329-spi driver. So let's add its DT node. Signed-off-by: Maksim Kiselev --- .../boot/dts/allwinner/sunxi-d1s-t113.dtsi | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi b/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi index 922e8e0e2c09..a52999240a8e 100644 --- a/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi +++ b/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi @@ -108,6 +108,12 @@ rmii_pe_pins: rmii-pe-pins { function = "emac"; }; + /omit-if-no-ref/ + spi0_pins: spi0-pins { + pins = "PC2", "PC3", "PC4", "PC5"; + function = "spi0"; + }; + /omit-if-no-ref/ uart1_pg6_pins: uart1-pg6-pins { pins = "PG6", "PG7"; @@ -447,6 +453,21 @@ mmc2: mmc@4022000 { #size-cells = <0>; }; + spi0: spi@4025000 { + compatible = "allwinner,sun20i-d1-spi", + "allwinner,sun50i-r329-spi"; + reg = <0x04025000 0x300>; + interrupts = ; + clocks = <&ccu CLK_BUS_SPI0>, <&ccu CLK_SPI0>; + clock-names = "ahb", "mod"; + dmas = <&dma 22>, <&dma 22>; + dma-names = "rx", "tx"; + resets = <&ccu RST_BUS_SPI0>; + status = "disabled"; + #address-cells = <1>; + #size-cells = <0>; + }; + usb_otg: usb@4100000 { compatible = "allwinner,sun20i-d1-musb", "allwinner,sun8i-a33-musb";