From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755092AbeDWMl5 (ORCPT ); Mon, 23 Apr 2018 08:41:57 -0400 Received: from mail-wr0-f194.google.com ([209.85.128.194]:46396 "EHLO mail-wr0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754954AbeDWMly (ORCPT ); Mon, 23 Apr 2018 08:41:54 -0400 X-Google-Smtp-Source: AB8JxZoXOriIofPSaXLn0GgV7I89V4WfkzxqnlNbSI6rb3TFjx9tzFt/506BDsKzbyfShqGKcz55FA== From: Jerome Brunet To: Srinivas Kandagatla , Carlo Caione , Kevin Hilman Cc: Jerome Brunet , linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 0/3] nvmem: meson-efuse: add write support Date: Mon, 23 Apr 2018 14:41:46 +0200 Message-Id: <20180423124149.3077-1-jbrunet@baylibre.com> X-Mailer: git-send-email 2.14.3 Sender: linux-kernel-owner@vger.kernel.org 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]. It has now been merged by Kevin. 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 Changes since v1 [1]: - Remove un-necessary code in callbacks - Rebase on v4.17-rc1 [0]: https://lkml.kernel.org/r/20180316145021.8517-1-jbrunet@baylibre.com [1]: https://lkml.kernel.org/r/20180316150113.9779-1-jbrunet@baylibre.com Jerome Brunet (3): nvmem: meson-efuse: remove econfig global nvmem: meson-efuse: simplify read callback nvmem: meson-efuse: add write support drivers/nvmem/meson-efuse.c | 41 ++++++++++++++++++++++------------------- 1 file changed, 22 insertions(+), 19 deletions(-) -- 2.14.3