From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932330AbaEPMS2 (ORCPT ); Fri, 16 May 2014 08:18:28 -0400 Received: from bear.ext.ti.com ([192.94.94.41]:53640 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932245AbaEPMSZ (ORCPT ); Fri, 16 May 2014 08:18:25 -0400 From: Peter Ujfalusi To: , , CC: , , , , , , , , Subject: [PATCH v3 09/13] dt/bindings: ti,edma: Remove redundant properties from documentation Date: Fri, 16 May 2014 15:17:16 +0300 Message-ID: <1400242640-9902-10-git-send-email-peter.ujfalusi@ti.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1400242640-9902-1-git-send-email-peter.ujfalusi@ti.com> References: <1400242640-9902-1-git-send-email-peter.ujfalusi@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >>From CCCFG register of eDMA3 we can get all the needed information for the driver about the IP: Number of channels: NUM_DMACH Number of regions: NUM_REGN Number of slots (PaRAM sets): NUM_PAENTRY Number of TC/EQ: NUM_EVQUE The ti,edma-regions; ti,edma-slots and dma-channels in DT are redundant since the very same information can be obtained from the HW. The mentioned properties are deprecated. Signed-off-by: Peter Ujfalusi --- Documentation/devicetree/bindings/dma/ti-edma.txt | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/Documentation/devicetree/bindings/dma/ti-edma.txt b/Documentation/devicetree/bindings/dma/ti-edma.txt index 68ff2137bae7..5ba525a10035 100644 --- a/Documentation/devicetree/bindings/dma/ti-edma.txt +++ b/Documentation/devicetree/bindings/dma/ti-edma.txt @@ -2,11 +2,8 @@ TI EDMA Required properties: - compatible : "ti,edma3" -- ti,edma-regions: Number of regions -- ti,edma-slots: Number of slots - #dma-cells: Should be set to <1> Clients should use a single channel number per DMA request. -- dma-channels: Specify total DMA channels per CC - reg: Memory map for accessing module - interrupt-parent: Interrupt controller the interrupt is routed through - interrupts: Exactly 3 interrupts need to be specified in the order: @@ -17,6 +14,13 @@ Optional properties: - ti,hwmods: Name of the hwmods associated to the EDMA - ti,edma-xbar-event-map: Crossbar event to channel map +Deprecated properties: +Listed here in case one wants to boot an old kernel with new DTB. These +properties might need to be added to the new DTS files. +- ti,edma-regions: Number of regions +- ti,edma-slots: Number of slots +- dma-channels: Specify total DMA channels per CC + Example: edma: edma@49000000 { @@ -26,9 +30,6 @@ edma: edma@49000000 { compatible = "ti,edma3"; ti,hwmods = "tpcc", "tptc0", "tptc1", "tptc2"; #dma-cells = <1>; - dma-channels = <64>; - ti,edma-regions = <4>; - ti,edma-slots = <256>; ti,edma-xbar-event-map = /bits/ 16 <1 12 2 13>; }; -- 1.9.3