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[209.132.180.67]) by mx.google.com with ESMTP id p3-v6si6243145plo.746.2018.03.16.08.01.22; Fri, 16 Mar 2018 08:01:24 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@baylibre-com.20150623.gappssmtp.com header.s=20150623 header.b=bhwCCXzz; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753192AbeCPPBT (ORCPT + 28 others); Fri, 16 Mar 2018 11:01:19 -0400 Received: from mail-wr0-f193.google.com ([209.85.128.193]:38218 "EHLO mail-wr0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751600AbeCPPBR (ORCPT ); Fri, 16 Mar 2018 11:01:17 -0400 Received: by mail-wr0-f193.google.com with SMTP id l8so12031613wrg.5 for ; Fri, 16 Mar 2018 08:01:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id; bh=J7zZ4niliQ2xQZpwrAgGJp2H/samkOAcYNLsLZ4dB50=; b=bhwCCXzz0bowtAWhtnoyb917ntAUwjPcKoA8s22SMLK1qnCva/TRMPOdOJJR19NyEh yg2uYIN75EQbEOzOSx0LzDtwBVYf6iSSYSptwQ6WeLe5HaJU5QTMvTki2Sq1MLKNbfwI MWZL7riF8CaqIo14pGG/MNBgSswvM1Cm3XngP9mWhpZ5NYLMlYAp0pMjOec7bj3+nMFW 6VpuTpNtCaqVteq9l1hs8LUhQlhp+1LKjiEzu7vHFej1qQbkMxgonzdcGi8RIJ6h0fzl qslIZqr7V1/sSfccPJVEKVFIobmCbuXNZ4HYEkxVa1FTRlnixWld7q6Z0wa2iTQnwFog Of/Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=J7zZ4niliQ2xQZpwrAgGJp2H/samkOAcYNLsLZ4dB50=; b=s7GfQOSSkkKmv7DYfhPmUBDJukDUhD1Okq1gRhgW59bC8ekzc7HuhyTnK4VtKa//Do soXbL+1eqjIeLkixz9q10BcSruHlcEsH2C3qkAUBdxHQZo2h9my4RxA+5J+6n9HK8PlZ NSRMEgUMs4+gAP54bXwFvaAjRBjnaiabtz4f81tj4ZJB+OwKDTaMqGHD5JeGnl6tLg90 B9o8OsilA90pYcltggTYvYFHJPF0ZrqjzcXpXBpzGQvadEJxJgKcbI+lvpNvClIp4AL+ VTk1yHTaXm0HPPGzb05TV/hHLNuVw5vhxD8XY2Vrx55E3aLUZwzwJ26kHmYEEN119+SR lcLA== X-Gm-Message-State: AElRT7GLuz0MUI9O/BwdhDhr6xm9RU8ZIJrW96tbGQbc9kvKKJGzOjRF +TNjXZ6M0Dnlgu/+wbuAJSVNFQ== X-Received: by 10.223.166.102 with SMTP id k93mr2051711wrc.231.1521212476722; Fri, 16 Mar 2018 08:01:16 -0700 (PDT) Received: from boomer.baylibre.local ([90.63.244.31]) by smtp.googlemail.com with ESMTPSA id f84sm2348834wmh.44.2018.03.16.08.01.15 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 16 Mar 2018 08:01:16 -0700 (PDT) From: Jerome Brunet To: Srinivas Kandagatla , Carlo Caione , Kevin Hilman Cc: Jerome Brunet , linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/2] nvmem: meson-efuse: add write support Date: Fri, 16 Mar 2018 16:01:11 +0100 Message-Id: <20180316150113.9779-1-jbrunet@baylibre.com> X-Mailer: git-send-email 2.14.3 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This changeset adds write support to meson efuse driver. The first patch just changes the way the nvmem data are allocated w/o any functional changes. The second patches actually adds write support. The memory being an OTP, it is safer if it remains read-only by default, which is why I also submitted this DT patch [0]. If a user knows what he is doing, it should be easy to remove the read-only property from the board DT. This can be done in u-boot, before starting linux: > fdt rm /efuse read-only Tested on the gxl libretech-cc [0]: https://lkml.kernel.org/r/20180316145021.8517-1-jbrunet@baylibre.com Jerome Brunet (2): nvmem: meson-efuse: remove econfig global nvmem: meson-efuse: add write support drivers/nvmem/meson-efuse.c | 37 +++++++++++++++++++++++++++---------- 1 file changed, 27 insertions(+), 10 deletions(-) -- 2.14.3 Reviewed-by: Kevin Hilman