From mboxrd@z Thu Jan 1 00:00:00 1970 From: mikko.perttunen@kapsi.fi (Mikko Perttunen) Date: Fri, 11 Jul 2014 19:48:32 +0300 Subject: [PATCH 5/8] of: Add Tegra124 EMC bindings In-Reply-To: References: <1405088313-20048-1-git-send-email-mperttunen@nvidia.com> <1405088313-20048-6-git-send-email-mperttunen@nvidia.com> Message-ID: <53C01560.3070200@kapsi.fi> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Sure, I'll do that for v2. On 07/11/2014 07:43 PM, Andrew Bresticker wrote: > On Fri, Jul 11, 2014 at 7:18 AM, Mikko Perttunen wrote: >> Add binding documentation for the nvidia,tegra124-emc device tree >> node. > >> diff --git a/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt b/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt > >> +Required properties : >> +- compatible : "nvidia,tegra124-emc". >> +- reg : Should contain 1 or 2 entries: >> + - EMC register set >> + - MC register set : Required only if no node with >> + 'compatible = "nvidia,tegra124-mc"' exists. The MC register set >> + is first read from the MC node. If it doesn't exist, it is read >> + from this property. >> +- timings : Should contain 1 entry for each supported clock rate. >> + Entries should be named "timing at n" where n is a 0-based increasing >> + number. The timings must be listed in rate-ascending order. > > There are upcoming boards which support multiple DRAM configurations > and require a separate set of timings for each configuration. Could > we instead have multiple sets of timings with the proper one selected > at runtime by RAM code, as reported by PMC_STRAPPING_OPT_A_0? > Something like: > > emc { > emc-table at 0 { > nvidia,ram-code = <0>; > timing at 0 { > ... > }; > ... > }; > emc-table at 1 { > nvidia,ram-code = <4>; > timing at 0 { > ... > }; > ... > }; > ... > }; > -- > To unsubscribe from this list: send the line "unsubscribe linux-tegra" in > the body of a message to majordomo at vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >