From patchwork Fri Jan 23 19:50:37 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anton Vorontsov X-Patchwork-Id: 20114 X-Patchwork-Delegate: galak@kernel.crashing.org Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from ozlabs.org (localhost [127.0.0.1]) by ozlabs.org (Postfix) with ESMTP id 5F4AA4769E for ; Sat, 24 Jan 2009 06:55:47 +1100 (EST) X-Original-To: linuxppc-dev@ozlabs.org Delivered-To: linuxppc-dev@ozlabs.org Received: from buildserver.ru.mvista.com (unknown [85.21.88.6]) by ozlabs.org (Postfix) with ESMTP id 19AA2DDF8F for ; Sat, 24 Jan 2009 06:50:38 +1100 (EST) Received: from localhost (unknown [10.150.0.9]) by buildserver.ru.mvista.com (Postfix) with ESMTP id 1E0028822; Sat, 24 Jan 2009 00:50:40 +0400 (SAMT) Date: Fri, 23 Jan 2009 22:50:37 +0300 From: Anton Vorontsov To: David Brownell Subject: [PATCH 4/6] powerpc: Add mmc-spi-slot bindings Message-ID: <20090123195037.GD21237@oksana.dev.rtsoft.ru> References: <20090123194958.GA17355@oksana.dev.rtsoft.ru> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20090123194958.GA17355@oksana.dev.rtsoft.ru> User-Agent: Mutt/1.5.18 (2008-05-17) Cc: linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org, spi-devel-general@lists.sourceforge.net, Andrew Morton X-BeenThere: linuxppc-dev@ozlabs.org X-Mailman-Version: 2.1.11 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@ozlabs.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@ozlabs.org The bindings describes a case where MMC/SD/SDIO slot directly connected to a SPI bus. Such setups are widely used on embedded PowerPC boards. The patch also adds the mmc-spi-slot entry to the OpenFirmware modalias table. Signed-off-by: Anton Vorontsov --- .../powerpc/dts-bindings/mmc-spi-slot.txt | 23 ++++++++++++++++++++ drivers/of/base.c | 1 + 2 files changed, 24 insertions(+), 0 deletions(-) create mode 100644 Documentation/powerpc/dts-bindings/mmc-spi-slot.txt diff --git a/Documentation/powerpc/dts-bindings/mmc-spi-slot.txt b/Documentation/powerpc/dts-bindings/mmc-spi-slot.txt new file mode 100644 index 0000000..c39ac28 --- /dev/null +++ b/Documentation/powerpc/dts-bindings/mmc-spi-slot.txt @@ -0,0 +1,23 @@ +MMC/SD/SDIO slot directly connected to a SPI bus + +Required properties: +- compatible : should be "mmc-spi-slot". +- reg : should specify SPI address (chip-select number). +- spi-max-frequency : maximum frequency for this device (Hz). +- voltage-ranges : two cells are required, first cell specifies minimum + slot voltage (mV), second cell specifies maximum slot voltage (mV). + Several ranges could be specified. +- gpios : (optional) may specify GPIOs in this order: Card-Detect GPIO, + Write-Protect GPIO. + +Example: + + mmc-slot@0 { + compatible = "fsl,mpc8323rdb-mmc-slot", + "mmc-spi-slot"; + reg = <0>; + gpios = <&qe_pio_d 14 1 + &qe_pio_d 15 0>; + voltage-ranges = <3300 3300>; + spi-max-frequency = <50000000>; + }; diff --git a/drivers/of/base.c b/drivers/of/base.c index cd17092..41c5dfd 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -446,6 +446,7 @@ struct of_modalias_table { }; static struct of_modalias_table of_modalias_table[] = { { "fsl,mcu-mpc8349emitx", "mcu-mpc8349emitx" }, + { "mmc-spi-slot", "mmc_spi" }, }; /**