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[109.252.193.186]) by smtp.gmail.com with ESMTPSA id k13sm932423ljh.136.2020.10.25.15.17.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 25 Oct 2020 15:17:52 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , Georgi Djakov , Rob Herring , Michael Turquette , Stephen Boyd , Peter De Schrijver , MyungJoo Ham , Kyungmin Park , Chanwoo Choi , Mikko Perttunen , Viresh Kumar , Peter Geis , Nicolas Chauvet , Krzysztof Kozlowski Cc: linux-tegra@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org Subject: [PATCH v6 04/52] dt-bindings: memory: tegra20: emc: Document nvidia, memory-controller property Date: Mon, 26 Oct 2020 01:16:47 +0300 Message-Id: <20201025221735.3062-5-digetx@gmail.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20201025221735.3062-1-digetx@gmail.com> References: <20201025221735.3062-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Tegra20 External Memory Controller talks to DRAM chips and it needs to be reprogrammed when memory frequency changes. Tegra Memory Controller sits behind EMC and these controllers are tightly coupled. This patch adds the new phandle property which allows to properly express connection of EMC and MC hardware in a device-tree, it also put the Tegra20 EMC binding on par with Tegra30+ EMC bindings, which is handy to have. Signed-off-by: Dmitry Osipenko --- .../bindings/memory-controllers/nvidia,tegra20-emc.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.txt b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.txt index 567cffd37f3f..1b0d4417aad8 100644 --- a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.txt +++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.txt @@ -12,6 +12,7 @@ Properties: irrespective of ram-code configuration. - interrupts : Should contain EMC General interrupt. - clocks : Should contain EMC clock. +- nvidia,memory-controller : Phandle of the Memory Controller node. Child device nodes describe the memory settings for different configurations and clock rates. @@ -24,6 +25,7 @@ Example: reg = <0x7000f400 0x400>; interrupts = <0 78 0x04>; clocks = <&tegra_car TEGRA20_CLK_EMC>; + nvidia,memory-controller = <&mc>; }