From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753729AbeE3PK1 (ORCPT ); Wed, 30 May 2018 11:10:27 -0400 Received: from mail-lf0-f68.google.com ([209.85.215.68]:38718 "EHLO mail-lf0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751684AbeE3PKX (ORCPT ); Wed, 30 May 2018 11:10:23 -0400 X-Google-Smtp-Source: ADUXVKLS90zFr0yWobMJfU47PbO058JzuBWd94i2MjzDWpJ1r6ngCCn1CvGcJ70b+dQ9Qo4Kfw1zZA== From: Dmitry Osipenko To: Thierry Reding , Peter De Schrijver , Jonathan Hunter , Prashant Gaikwad , Michael Turquette , Stephen Boyd , Rob Herring , Mark Rutland Cc: linux-tegra@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 0/4] Tegra20 External Memory Controller driver Date: Wed, 30 May 2018 18:06:42 +0300 Message-Id: <20180530150646.19030-1-digetx@gmail.com> X-Mailer: git-send-email 2.17.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, Couple years ago the Tegra20 EMC driver was removed from the kernel due to incompatible changes in the Tegra's clock driver. This patchset introduces a modernized EMC driver. Currently the sole purpose of the driver is to initialize DRAM frequency to maximum rate during of the kernels boot-up. Later we may consider implementing dynamic memory frequency scaling, utilizing functionality provided by this driver. Dmitry Osipenko (4): dt: bindings: tegra20-emc: Document interrupt property ARM: dts: tegra20: Add interrupt to External Memory Controller clk: tegra20: Turn EMC clock gate into divider memory: tegra: Introduce Tegra20 EMC driver .../bindings/arm/tegra/nvidia,tegra20-emc.txt | 2 + arch/arm/boot/dts/tegra20.dtsi | 1 + drivers/clk/tegra/clk-tegra20.c | 39 +- drivers/memory/tegra/Kconfig | 10 + drivers/memory/tegra/Makefile | 1 + drivers/memory/tegra/tegra20-emc.c | 573 ++++++++++++++++++ 6 files changed, 616 insertions(+), 10 deletions(-) create mode 100644 drivers/memory/tegra/tegra20-emc.c -- 2.17.0