From patchwork Thu Oct 7 12:08:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roger Quadros X-Patchwork-Id: 12541687 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A54AEC433EF for ; Thu, 7 Oct 2021 12:09:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 890E461371 for ; Thu, 7 Oct 2021 12:09:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241364AbhJGMLD (ORCPT ); Thu, 7 Oct 2021 08:11:03 -0400 Received: from mail.kernel.org ([198.145.29.99]:50834 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241295AbhJGMKr (ORCPT ); Thu, 7 Oct 2021 08:10:47 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id C5D456138B; Thu, 7 Oct 2021 12:08:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1633608533; bh=FIIE9K0/H88rISiqYZ7bh1K+OTLs6uXJkgSOKwXBzP4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=imu12APJls6O+WbUdEIxSR6/W35mJyMJDOD49B4me3ZpjwRbLwvrNz6Z9LH1NRd5l NyLLLDSM/RWPuJNM37Cto6TXvksHRFI0mIKr61ePk+pcW7MjpGetHxUbu2+2CiYfgk Ii0evAv+1UXeT8BRBoCQmZiGusB6H3PUe/Oq4aEhgT+omQ/RzK6aTnY6ERnrr9iKO2 60OSxCnUL6J3VS66bfObgbtWu630xR92fKUU/wGYv9RRvcoifXL610ELgCRR2dsMcG CmbkOV7N+tYOt8UPcBSeiGgeJ4gemJRYsj/Hl6Y0gu0nXe+rv8IAHZqdlkmnpZ7EQy YooNaf2wPayCQ== From: Roger Quadros To: tony@atomide.com Cc: robh+dt@kernel.org, grygorii.strashko@ti.com, nm@ti.com, lokeshvutla@ti.com, nsekhar@ti.com, krzysztof.kozlowski@canonical.com, miquel.raynal@bootlin.com, devicetree@vger.kernel.org, linux-mtd@lists.infradead.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, Roger Quadros Subject: [PATCH v5 6/8] dt-bindings: memory-controllers: ti,gpmc: Convert to yaml Date: Thu, 7 Oct 2021 15:08:28 +0300 Message-Id: <20211007120830.17221-7-rogerq@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211007120830.17221-1-rogerq@kernel.org> References: <20211007120830.17221-1-rogerq@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org Convert omap-gpmc.txt to ti,gpmc.yaml. Signed-off-by: Roger Quadros Reviewed-by: Rob Herring Reviewed-by: Krzysztof Kozlowski --- .../bindings/memory-controllers/omap-gpmc.txt | 157 ---------------- .../bindings/memory-controllers/ti,gpmc.yaml | 172 ++++++++++++++++++ 2 files changed, 172 insertions(+), 157 deletions(-) delete mode 100644 Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt create mode 100644 Documentation/devicetree/bindings/memory-controllers/ti,gpmc.yaml diff --git a/Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt b/Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt deleted file mode 100644 index c1359f4d48d7..000000000000 --- a/Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt +++ /dev/null @@ -1,157 +0,0 @@ -Device tree bindings for OMAP general purpose memory controllers (GPMC) - -The actual devices are instantiated from the child nodes of a GPMC node. - -Required properties: - - - compatible: Should be set to one of the following: - - ti,omap2420-gpmc (omap2420) - ti,omap2430-gpmc (omap2430) - ti,omap3430-gpmc (omap3430 & omap3630) - ti,omap4430-gpmc (omap4430 & omap4460 & omap543x) - ti,am3352-gpmc (am335x devices) - - - reg: A resource specifier for the register space - (see the example below) - - ti,hwmods: Should be set to "ti,gpmc" until the DT transition is - completed. - - #address-cells: Must be set to 2 to allow memory address translation - - #size-cells: Must be set to 1 to allow CS address passing - - gpmc,num-cs: The maximum number of chip-select lines that controller - can support. - - gpmc,num-waitpins: The maximum number of wait pins that controller can - support. - - ranges: Must be set up to reflect the memory layout with four - integer values for each chip-select line in use: - - 0 - - Currently, calculated values derived from the contents - of the per-CS register GPMC_CONFIG7 (as set up by the - bootloader) are used for the physical address decoding. - As this will change in the future, filling correct - values here is a requirement. - - interrupt-controller: The GPMC driver implements and interrupt controller for - the NAND events "fifoevent" and "termcount" plus the - rising/falling edges on the GPMC_WAIT pins. - The interrupt number mapping is as follows - 0 - NAND_fifoevent - 1 - NAND_termcount - 2 - GPMC_WAIT0 pin edge - 3 - GPMC_WAIT1 pin edge, and so on. - - interrupt-cells: Must be set to 2 - - gpio-controller: The GPMC driver implements a GPIO controller for the - GPMC WAIT pins that can be used as general purpose inputs. - 0 maps to GPMC_WAIT0 pin. - - gpio-cells: Must be set to 2 - -Required properties when using NAND prefetch dma: - - dmas GPMC NAND prefetch dma channel - - dma-names Must be set to "rxtx" - -Timing properties for child nodes. All are optional and default to 0. - - - gpmc,sync-clk-ps: Minimum clock period for synchronous mode, in picoseconds - - Chip-select signal timings (in nanoseconds) corresponding to GPMC_CONFIG2: - - gpmc,cs-on-ns: Assertion time - - gpmc,cs-rd-off-ns: Read deassertion time - - gpmc,cs-wr-off-ns: Write deassertion time - - ADV signal timings (in nanoseconds) corresponding to GPMC_CONFIG3: - - gpmc,adv-on-ns: Assertion time - - gpmc,adv-rd-off-ns: Read deassertion time - - gpmc,adv-wr-off-ns: Write deassertion time - - gpmc,adv-aad-mux-on-ns: Assertion time for AAD - - gpmc,adv-aad-mux-rd-off-ns: Read deassertion time for AAD - - gpmc,adv-aad-mux-wr-off-ns: Write deassertion time for AAD - - WE signals timings (in nanoseconds) corresponding to GPMC_CONFIG4: - - gpmc,we-on-ns Assertion time - - gpmc,we-off-ns: Deassertion time - - OE signals timings (in nanoseconds) corresponding to GPMC_CONFIG4: - - gpmc,oe-on-ns: Assertion time - - gpmc,oe-off-ns: Deassertion time - - gpmc,oe-aad-mux-on-ns: Assertion time for AAD - - gpmc,oe-aad-mux-off-ns: Deassertion time for AAD - - Access time and cycle time timings (in nanoseconds) corresponding to - GPMC_CONFIG5: - - gpmc,page-burst-access-ns: Multiple access word delay - - gpmc,access-ns: Start-cycle to first data valid delay - - gpmc,rd-cycle-ns: Total read cycle time - - gpmc,wr-cycle-ns: Total write cycle time - - gpmc,bus-turnaround-ns: Turn-around time between successive accesses - - gpmc,cycle2cycle-delay-ns: Delay between chip-select pulses - - gpmc,clk-activation-ns: GPMC clock activation time - - gpmc,wait-monitoring-ns: Start of wait monitoring with regard to valid - data - -Boolean timing parameters. If property is present parameter enabled and -disabled if omitted: - - gpmc,adv-extra-delay: ADV signal is delayed by half GPMC clock - - gpmc,cs-extra-delay: CS signal is delayed by half GPMC clock - - gpmc,cycle2cycle-diffcsen: Add "cycle2cycle-delay" between successive - accesses to a different CS - - gpmc,cycle2cycle-samecsen: Add "cycle2cycle-delay" between successive - accesses to the same CS - - gpmc,oe-extra-delay: OE signal is delayed by half GPMC clock - - gpmc,we-extra-delay: WE signal is delayed by half GPMC clock - - gpmc,time-para-granularity: Multiply all access times by 2 - -The following are only applicable to OMAP3+ and AM335x: - - gpmc,wr-access-ns: In synchronous write mode, for single or - burst accesses, defines the number of - GPMC_FCLK cycles from start access time - to the GPMC_CLK rising edge used by the - memory device for the first data capture. - - gpmc,wr-data-mux-bus-ns: In address-data multiplex mode, specifies - the time when the first data is driven on - the address-data bus. - -GPMC chip-select settings properties for child nodes. All are optional. - -- gpmc,burst-length Page/burst length. Must be 4, 8 or 16. -- gpmc,burst-wrap Enables wrap bursting -- gpmc,burst-read Enables read page/burst mode -- gpmc,burst-write Enables write page/burst mode -- gpmc,device-width Total width of device(s) connected to a GPMC - chip-select in bytes. The GPMC supports 8-bit - and 16-bit devices and so this property must be - 1 or 2. -- gpmc,mux-add-data Address and data multiplexing configuration. - Valid values are 1 for address-address-data - multiplexing mode and 2 for address-data - multiplexing mode. -- gpmc,sync-read Enables synchronous read. Defaults to asynchronous - is this is not set. -- gpmc,sync-write Enables synchronous writes. Defaults to asynchronous - is this is not set. -- gpmc,wait-pin Wait-pin used by client. Must be less than - "gpmc,num-waitpins". -- gpmc,wait-on-read Enables wait monitoring on reads. -- gpmc,wait-on-write Enables wait monitoring on writes. - -Example for an AM33xx board: - - gpmc: gpmc@50000000 { - compatible = "ti,am3352-gpmc"; - ti,hwmods = "gpmc"; - reg = <0x50000000 0x2000>; - interrupts = <100>; - dmas = <&edma 52 0>; - dma-names = "rxtx"; - gpmc,num-cs = <8>; - gpmc,num-waitpins = <2>; - #address-cells = <2>; - #size-cells = <1>; - ranges = <0 0 0x08000000 0x10000000>; /* CS0 @addr 0x8000000, size 0x10000000 */ - interrupt-controller; - #interrupt-cells = <2>; - gpio-controller; - #gpio-cells = <2>; - - /* child nodes go here */ - }; diff --git a/Documentation/devicetree/bindings/memory-controllers/ti,gpmc.yaml b/Documentation/devicetree/bindings/memory-controllers/ti,gpmc.yaml new file mode 100644 index 000000000000..25b42d68f9b3 --- /dev/null +++ b/Documentation/devicetree/bindings/memory-controllers/ti,gpmc.yaml @@ -0,0 +1,172 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/memory-controllers/ti,gpmc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Texas Instruments GPMC Memory Controller device-tree bindings + +maintainers: + - Tony Lindgren + - Roger Quadros + +description: + The GPMC is a unified memory controller dedicated for interfacing + with external memory devices like + - Asynchronous SRAM-like memories and ASICs + - Asynchronous, synchronous, and page mode burst NOR flash + - NAND flash + - Pseudo-SRAM devices + +properties: + compatible: + items: + - enum: + - ti,am3352-gpmc + - ti,omap2420-gpmc + - ti,omap2430-gpmc + - ti,omap3430-gpmc + - ti,omap4430-gpmc + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + description: | + Functional clock. Used for bus timing calculations and + GPMC configuration. + + clock-names: + items: + - const: fck + + dmas: + items: + - description: DMA channel for GPMC NAND prefetch + + dma-names: + items: + - const: rxtx + + "#address-cells": true + + "#size-cells": true + + gpmc,num-cs: + description: maximum number of supported chip-select lines. + $ref: /schemas/types.yaml#/definitions/uint32 + + gpmc,num-waitpins: + description: maximum number of supported wait pins. + $ref: /schemas/types.yaml#/definitions/uint32 + + ranges: + minItems: 1 + description: | + Must be set up to reflect the memory layout with four + integer values for each chip-select line in use, + 0 + items: + - description: NAND bank 0 + - description: NOR/SRAM bank 0 + - description: NOR/SRAM bank 1 + + '#interrupt-cells': + const: 2 + + interrupt-controller: + description: | + The GPMC driver implements and interrupt controller for + the NAND events "fifoevent" and "termcount" plus the + rising/falling edges on the GPMC_WAIT pins. + The interrupt number mapping is as follows + 0 - NAND_fifoevent + 1 - NAND_termcount + 2 - GPMC_WAIT0 pin edge + 3 - GPMC_WAIT1 pin edge, and so on. + + '#gpio-cells': + const: 2 + + gpio-controller: + description: | + The GPMC driver implements a GPIO controller for the + GPMC WAIT pins that can be used as general purpose inputs. + 0 maps to GPMC_WAIT0 pin. + + ti,hwmods: + description: + Name of the HWMOD associated with GPMC. This is for legacy + omap2/3 platforms only. + $ref: /schemas/types.yaml#/definitions/string + deprecated: true + + ti,no-idle-on-init: + description: + Prevent idling the module at init. This is for legacy omap2/3 + platforms only. + type: boolean + deprecated: true + +patternProperties: + "@[0-7],[a-f0-9]+$": + type: object + description: | + The child device node represents the device connected to the GPMC + bus. The device can be a NAND chip, SRAM device, NOR device + or an ASIC. + + allOf: + - $ref: "ti,gpmc-child.yaml" + + unevaluatedProperties: false + +required: + - compatible + - reg + - gpmc,num-cs + - gpmc,num-waitpins + - "#address-cells" + - "#size-cells" + +additionalProperties: false + +examples: + - | + #include + #include + + gpmc: memory-controller@50000000 { + compatible = "ti,am3352-gpmc"; + reg = <0x50000000 0x2000>; + interrupts = <100>; + clocks = <&l3s_clkctrl>; + clock-names = "fck"; + dmas = <&edma 52 0>; + dma-names = "rxtx"; + gpmc,num-cs = <8>; + gpmc,num-waitpins = <2>; + #address-cells = <2>; + #size-cells = <1>; + ranges = <0 0 0x08000000 0x10000000>; /* CS0 @addr 0x8000000, size 0x10000000 */ + interrupt-controller; + #interrupt-cells = <2>; + gpio-controller; + #gpio-cells = <2>; + + nand@0,0 { + compatible = "ti,omap2-nand"; + reg = <0 0 4>; + interrupt-parent = <&gpmc>; + interrupts = <0 IRQ_TYPE_NONE>, /* fifoevent */ + <1 IRQ_TYPE_NONE>; /* termcount */ + ti,nand-xfer-type = "prefetch-dma"; + ti,nand-ecc-opt = "bch16"; + ti,elm-id = <&elm>; + rb-gpios = <&gpmc 0 GPIO_ACTIVE_HIGH>; /* gpmc_wait0 pin */ + }; + };