From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f52.google.com (mail-wr1-f52.google.com [209.85.221.52]) (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 D2AB428FFFD for ; Fri, 9 May 2025 11:07:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.52 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746788826; cv=none; b=YQuMn/O8Cp3NR0aquZOlCSCPmh4ZYV6SN0a7DiQQpN0qR/B4IWbmEq2EKy9NKxesoSgSPVCxcdkYZJ8WZPKyGEuri0TDkCvxPMMUIijRdtxhgC8EZGbjvOejU1bYnpf1amytUzrKPcgS1iRFkpvzd/3Ppiz7u0H1BYTNf4vEtMU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746788826; c=relaxed/simple; bh=/FAuRPFC8ORDoN/VXflFQ2NEMxezE2lgdO50IWKPdAg=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=qPvMMNCKHHz25OkqTZJzirIYpCMFV/sUkcCoFpc+UP98l8k0yb24w5g4TuqvCALZ15Q/yoQYxx/to9TwzjK8aa3Yk53MTI4lvbgDORUzFZBnu9s8ns+srTevZgLm6IGA1Yjy11c57tlIuq8gIqfTYm4i1u8oIU7GQJFV3EFPy8k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=cR58UcSU; arc=none smtp.client-ip=209.85.221.52 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="cR58UcSU" Received: by mail-wr1-f52.google.com with SMTP id ffacd0b85a97d-3a0af41faa5so1063336f8f.2 for ; Fri, 09 May 2025 04:07:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1746788823; x=1747393623; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=Z83P5zYL5aiqJ4xhC2aD1SNehmR83/wjYJwbnC4UTJU=; b=cR58UcSUp/4wAZsyJLhDxagPmAE4OvsGkoqXjnMSbinDq8D4c8pZmsgQu6aGouYWmY myOi28F6hyfSnjK8d+CLNeq1ndhgujIW57ZUfUm5nCWd3VC/FKEp+8b6MTXl7ea9S45t 491OHUVYWn4h+qAFHZ+042p7OAszCPpuamaWjgb1GPztv0u+YcU09dk1CteHnFkxq53/ qeb4T76lMakZpwpw+Ivundd8J1mbxs4f/o+FB/t5OQAYd+P7cZL6n3u3jl1rgGw2jyCr RW9YRy65kxmBLVK4YofjVT8RP2gD6rQZufo5a8a8V2qDFiwugzjONC3ydvmZBLb9k8Z/ m0dA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1746788823; x=1747393623; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Z83P5zYL5aiqJ4xhC2aD1SNehmR83/wjYJwbnC4UTJU=; b=LjG343jlmJ6rxLdLwRGko2QEfhNdBouEog8zc/oZ896FCcUD+zkh5gwgHW6l0+MzG+ BuWRorfvpmK+ZAe4s+CfAqnRRRiKZ/9AT0VJWpnYfGYlUH2ieuEnrIbxR5O089hHENai dyUk5QXU7l7/2h6NPa4VZfnkf/S3Fn7oMtsuCMnnGSC7rkVOKBPedn6K6fZv0inO6hj2 Slz/M5zwgi5qu6HJZDj5r4Q+s1cxswW+SJBbeK/bZ852DEkYivXJ+ehPRmQaawiGKSI9 DDj8+laHDZLdG0wV/DkclPtxuzz1w49jatX4PiPyC5JsSDTkmjH4q2GR32rkQwjZwkH0 77uw== X-Forwarded-Encrypted: i=1; AJvYcCUTynmEmMt+8b+XPolKgXdzjUV6vvRmdMAM2mbeAvMqfcuqMjCESOqXnUZMxyhzS5klj4t6zZ9XybPr@vger.kernel.org X-Gm-Message-State: AOJu0Yz40W/SS9wOOpFNzh9HfP8GXn5heRJkED8jKD+WS5iKMp3kbTl5 cjLnjOYNaK0mvA1Zlq2uHmQliU0usI7XpyYqztzLgKvwQp27ZgUnXi4pWlmIZVs= X-Gm-Gg: ASbGncsL0gTeJXl7h2fdJuGIOQQ6BtWtpjDi62Hb3S1IL1qeOrSnRnx8V+T57O37S7f JTsHCrDwe8B/OcOABaKjzdh0jFuuQKurJzYCh74Dd+q8N+x5yaQqXsnhBXRclSbfwoggYdtM2BL PdA11qc9h1R0V6dBwwCI1G+vzDcHHDegQYv+XchVp5elReryiozdFAi2tFyq2+AyjG0HCr6JkqR 8ln5Je8QqYbFhlui0T5eZTzoo6p66bnE5YAqZJ+5Uk8yHROaLkXnOpeOnCPPb72L2wIb9J7leMQ xEwvX9/vWJ3S15B4lfBJ9jNb07yS+mCBHVCuXTxglm0JC34= X-Google-Smtp-Source: AGHT+IEzZyvVmE0isCL1qd+GE70rpX9DLtjU5jOZ0ngvIzyhV3E/BibSqbyphaSiycReT9JsLKLk1g== X-Received: by 2002:a05:6000:2cb:b0:3a0:b8b9:6b2e with SMTP id ffacd0b85a97d-3a1f64a430cmr2498885f8f.34.1746788822979; Fri, 09 May 2025 04:07:02 -0700 (PDT) Received: from ho-tower-lan.lan ([77.81.75.81]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a1f58ecadfsm2914797f8f.22.2025.05.09.04.07.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 May 2025 04:07:02 -0700 (PDT) From: James Clark Date: Fri, 09 May 2025 12:05:53 +0100 Subject: [PATCH 06/14] spi: spi-fsl-dspi: Avoid setup_accel logic for DMA transfers Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250509-james-nxp-spi-v1-6-32bfcd2fea11@linaro.org> References: <20250509-james-nxp-spi-v1-0-32bfcd2fea11@linaro.org> In-Reply-To: <20250509-james-nxp-spi-v1-0-32bfcd2fea11@linaro.org> To: Vladimir Oltean , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Chester Lin , Matthias Brugger , Ghennadi Procopciuc , NXP S32 Linux Team , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , larisa.grigore@nxp.com, arnd@linaro.org, andrei.stefanescu@nxp.com, dan.carpenter@linaro.org Cc: linux-spi@vger.kernel.org, imx@lists.linux.dev, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, James Clark X-Mailer: b4 0.14.0 From: Larisa Grigore DMA can't repack the buffer like the CPU can, so skip the accel path which may change the word size and break DMA assumptions. Signed-off-by: Larisa Grigore Signed-off-by: James Clark --- drivers/spi/spi-fsl-dspi.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index f7f9425a19e1..902bf23d276a 100644 --- a/drivers/spi/spi-fsl-dspi.c +++ b/drivers/spi/spi-fsl-dspi.c @@ -849,8 +849,8 @@ static void dspi_setup_accel(struct fsl_dspi *dspi) struct spi_transfer *xfer = dspi->cur_transfer; bool odd = !!(dspi->len & 1); - /* No accel for frames not multiple of 8 bits at the moment */ - if (xfer->bits_per_word % 8) + /* No accel for DMA transfers or frames not multiples of 8 bits at the moment */ + if (dspi->devtype_data->trans_mode == DSPI_DMA_MODE || xfer->bits_per_word % 8) goto no_accel; if (!odd && dspi->len <= dspi->devtype_data->fifo_size * 2) { @@ -859,10 +859,7 @@ static void dspi_setup_accel(struct fsl_dspi *dspi) dspi->oper_bits_per_word = 8; } else { /* Start off with maximum supported by hardware */ - if (dspi->devtype_data->trans_mode == DSPI_XSPI_MODE) - dspi->oper_bits_per_word = 32; - else - dspi->oper_bits_per_word = 16; + dspi->oper_bits_per_word = 32; /* * And go down only if the buffer can't be sent with -- 2.34.1