From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f43.google.com (mail-wm1-f43.google.com [209.85.128.43]) (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 7FF663382CB for ; Tue, 9 Jun 2026 07:15:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.43 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780989316; cv=none; b=blddbFPdcWPfDYJkI8P94DhNNd39I1SIjhIawtFPJLFFif3sKigEDa81BelSOFCIGDxzKPNz8SEofoX4hiPY4H+XkmU/4E9WSBfkWbPDj6ioPkTxd4l/TFc6XwvUSYDwgeOXK6YzezyKWbUbB8Shk3NPZZHvMg5I53fjz/hDCAI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780989316; c=relaxed/simple; bh=36iZnvTc923EPRXPcsIAXwyaRN49ElQsHpAHmsLxlBE=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=R2Z3YmJ4WhgAsxzgaBSOJryBbczkIjv6mmx1S9Ns9mTFxG+ebhWGMKXViRBC7FaUnz+HnYXbqUjiFk1MGy6A8EhU04vWwvcF+G4GfPcdSBzg4S/Gaxqq5oVutbOLomdfyAhA4qxWvvgxu1f2xOzen7eZJ/RsGekGFMaNl2RfbI4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=husGj8Dy; arc=none smtp.client-ip=209.85.128.43 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="husGj8Dy" Received: by mail-wm1-f43.google.com with SMTP id 5b1f17b1804b1-490b2b037d2so45298775e9.3 for ; Tue, 09 Jun 2026 00:15:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1780989313; x=1781594113; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=IQ9qZd54/Lmmr54V4cXUb7WR3Uefj23Po4HWaeBJsic=; b=husGj8Dy5d3rtU/oK0DzSRz/cjjHvjDFxIVLU9IbY6+QNCel/XZJMnnCU+Owmg2upX WmOCFyuwQfAQaChugLSa23DCsDEFHdH24vA/js0nSBg0mqmOz7qHpzEjX7uD972c3xV3 tBHQU7S84zmLuwQsrrGTZiCivCHAHhT1w1jxUXMCSzfJ/X2M7uaf+vrmMzQto8Ni1BEH 0un/AB/jSjnAAQprwt8wubEHwrGX2lSiSho+yhhBBGkbXfQB+vtITOyiqEU4dIoBNm7H ZKQO6LonGrBwDCczurjgk9fQ3DsDUupoGPyS2t8NDLd6HEyVoaM25f+5EeRuWZKLPYtA zkzA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1780989313; x=1781594113; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=IQ9qZd54/Lmmr54V4cXUb7WR3Uefj23Po4HWaeBJsic=; b=JbIqb6NqYhN1b93q0OGauV52Mif4po/cDZ1I3AxupdIypBk82j1a1tz0muxSBGsoyl W3JrLWOHBDvo7+yMLliK/tZ3O0qqHcw2KRJuCsV9Op4aCCIX8jt7/UKWPI5E82+4/1MU 317FexqGhPQhDG0sGEC1BUBSaYG1uUMl7hjaL258c/YBd2qkTbf9tIEKsqI7blb3oj+A E2Sp8RNKzXz07rxTtDO/VGlRxNySavdFU5Ym3Z1TYKi8gSsyVQfXGbBGWPBjjRtKAkZM 89RQN3aCuEPr87foWe1Hiu+7u3VcY90t2wFWgD0NQ6N6m9PW3DCQEFkJ1bacoPOKkyry peSg== X-Forwarded-Encrypted: i=1; AFNElJ8+Jiod/xWJCdxbW/i4qQ2EPKlyBF4VQdr9/AnmzwzOJrQuVIB6KAN10kCqK7cGBF0HMuZ2r6mwk95K+zw=@vger.kernel.org X-Gm-Message-State: AOJu0YwSNw1SLM//Xx4e6wuROg/rpXbz8t4/K/wkVo2/8NuENwT1bQ/8 Brwp305qnu7hRIMbEh7FZ4V075KZeRTOgBusXQrEbGJUF+qUSw45Hvd9 X-Gm-Gg: Acq92OFPVbYoSkBBAH7yPL5lDnuXY4kJfcSTP1kvyzjy4y+cmz5hG2BI3hnPAdHbAVN LisV+epLTdQsBV4nXJA/KQyPEh2nskkB8ygmebq4qeijkPgAs80+4sULAptKmJCbkmOQIOpc10b meWsMr0hSlhC5ObGLcLBBQJeO24wz02iT5tgwG6Zg2Xq+u0s8LXZpXsxoHWphSePWPLIsQIlVsw 9GL+T5TCiAD7Frc1rvmv58+WBwzeZPdFxOUCFh0y+JMJwRxYFLDUKcWhfgJUx8PR0ytN99AacE+ fhDgcbaVOZQw0Zv1uu7d8zt8KLbknfcFLMNENlZrk1SZFFxiMqi3k3RcX9U7u4qHIQdUQxK+UEC Ux/peSOZheGwOWTFSIzEnnmyqcxtTAfkQGOM63mzR+sGj1Xh6MF4jJe3WWGosYCPjJf+s3gdIiH myonvil0kvscYWbVoJHbs/pIIB6lXCYnDNd3Q8ljJgPj8V X-Received: by 2002:a05:600c:34cb:b0:490:4b89:5361 with SMTP id 5b1f17b1804b1-490c25afa03mr299042535e9.7.1780989312636; Tue, 09 Jun 2026 00:15:12 -0700 (PDT) Received: from taln60.nuvoton.co.il ([212.199.177.18]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-4601f2ec711sm57909918f8f.12.2026.06.09.00.15.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 09 Jun 2026 00:15:10 -0700 (PDT) From: Tomer Maimon To: andrew@codeconstruct.com.au, broonie@kernel.org Cc: openbmc@lists.ozlabs.org, linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, avifishman70@gmail.com, tmaimon77@gmail.com, tali.perry1@gmail.com, venture@google.com, yuenn@google.com, benjaminfair@google.com Subject: [PATCH v1] spi: npcm-fiu: support dual and quad UMA writes Date: Tue, 9 Jun 2026 10:14:58 +0300 Message-Id: <20260609071458.2692482-1-tmaimon77@gmail.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The manual page-program path used the UMA command byte for the first byte of each continuation chunk. That forced command-lane semantics onto chunked writes and blocked dual/quad payload writes. Switch continuation chunks to data-only UMA transactions so WDBPCK controls the payload bus width. Signed-off-by: Tomer Maimon --- drivers/spi/spi-npcm-fiu.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/drivers/spi/spi-npcm-fiu.c b/drivers/spi/spi-npcm-fiu.c index 6617751009c3..ebe3387d11f5 100644 --- a/drivers/spi/spi-npcm-fiu.c +++ b/drivers/spi/spi-npcm-fiu.c @@ -393,7 +393,7 @@ static int npcm_fiu_uma_write(struct spi_mem *mem, { struct npcm_fiu_spi *fiu = spi_controller_get_devdata(mem->spi->controller); - u32 uma_cfg = BIT(10); + u32 uma_cfg = cmd ? BIT(10) : 0; u32 data_reg[4] = {0}; u32 val; u32 i; @@ -403,8 +403,11 @@ static int npcm_fiu_uma_write(struct spi_mem *mem, (spi_get_chipselect(mem->spi, 0) << NPCM_FIU_UMA_CTS_DEV_NUM_SHIFT)); - regmap_update_bits(fiu->regmap, NPCM_FIU_UMA_CMD, - NPCM_FIU_UMA_CMD_CMD, cmd); + if (cmd) + regmap_update_bits(fiu->regmap, NPCM_FIU_UMA_CMD, + NPCM_FIU_UMA_CMD_CMD, cmd); + else + uma_cfg |= ilog2(op->data.buswidth) << NPCM_FIU_UMA_CFG_WDBPCK_SHIFT; if (data_size) { memcpy(data_reg, data, data_size); @@ -464,8 +467,7 @@ static int npcm_fiu_manualwrite(struct spi_mem *mem, /* Starting the data writing loop in multiples of 8 */ for (idx = 0; idx < num_data_chunks; ++idx) { - ret = npcm_fiu_uma_write(mem, op, data[0], false, - &data[1], CHUNK_SIZE - 1); + ret = npcm_fiu_uma_write(mem, op, 0, false, &data[0], CHUNK_SIZE); if (ret) return ret; @@ -474,8 +476,7 @@ static int npcm_fiu_manualwrite(struct spi_mem *mem, /* Handling chunk remains */ if (remain_data > 0) { - ret = npcm_fiu_uma_write(mem, op, data[0], false, - &data[1], remain_data - 1); + ret = npcm_fiu_uma_write(mem, op, 0, false, &data[0], remain_data); if (ret) return ret; } -- 2.34.1