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Message-ID: <568B1DFC.9060901@huawei.com>
Date: Tue, 5 Jan 2016 09:35:56 +0800
From: xuejiancheng <xuejiancheng@...wei.com>
To: Rob Herring <robh@...nel.org>
CC: <pawel.moll@....com>, <mark.rutland@....com>,
<ijc+devicetree@...lion.org.uk>, <galak@...eaurora.org>,
<dwmw2@...radead.org>, <computersforpeace@...il.com>,
<shijie.huang@...el.com>, <pengbinquan@...wei.com>,
<han.xu@...escale.com>, <ezequiel@...guardiasur.com.ar>,
<fabio.estevam@...escale.com>, <manabian@...il.com>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-mtd@...ts.infradead.org>, <yanhaifeng@...ilicon.com>,
<yanghongwei@...ilicon.com>, <suwenping@...ilicon.com>,
<ml.yang@...ilicon.com>, <gaofei@...ilicon.com>,
<zhangzhenxing@...ilicon.com>, <xuejiancheng@...ilicon.com>
Subject: Re: [PATCH] mtd: spi-nor: add hisilicon spi-nor flash controller
driver
Hi Rob,
Happy new year to you! Thank you for your patience.
On 2016/1/1 6:26, Rob Herring wrote:
> On Wed, Dec 30, 2015 at 10:26:11AM +0800, Jiancheng Xue wrote:
>> add hisilicon spi-nor flash controller driver
>>
>> Signed-off-by: Binquan Peng <pengbinquan@...wei.com>
>> Signed-off-by: Jiancheng Xue <xuejiancheng@...wei.com>
>> ---
>> .../devicetree/bindings/spi/spi-hisi-sfc.txt | 24 +
>> drivers/mtd/spi-nor/Kconfig | 7 +
>> drivers/mtd/spi-nor/Makefile | 1 +
>> drivers/mtd/spi-nor/hisi-sfc.c | 505 +++++++++++++++++++++
>> 4 files changed, 537 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/spi/spi-hisi-sfc.txt
>> create mode 100644 drivers/mtd/spi-nor/hisi-sfc.c
>>
>> diff --git a/Documentation/devicetree/bindings/spi/spi-hisi-sfc.txt b/Documentation/devicetree/bindings/spi/spi-hisi-sfc.txt
>> new file mode 100644
>> index 0000000..170885a
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/spi/spi-hisi-sfc.txt
>> @@ -0,0 +1,24 @@
>> +HiSilicon SPI-NOR Flash Controller
>> +
>> +Required properties:
>> +- compatible : Should be "hisilicon,hisi-sfc".
>> +- address-cells: number of cells required to define a chip select
>> + address on the SPI bus. Should be set to 1. See spi-bus.txt.
>> +- size-cells:Should be 0.
>
> How about some consistency in the spacing around the ':'.
OK. I'll correct it in next version. Thank you.
>
>> +- reg : Offset and length of the register set for the controller device.
>> +- reg-names: Must include the following two entries:"control","memory".
> ^ ^
> Spaces needed.
OK
>
>> +- clocks: handle to spi-nor flash controller clock.
>> +
>> +Example:
>> +spi-nor-controller@...00000 {
>> + compatible = "hisilicon,hisi-sfc";
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> + reg = <0x10000000 0x1000>, <0x14000000 0x1000000>;
>> + reg-names = "control", "memory";
>> + clocks = <&clock HI3519_FMC_CLK>;
>> + spi-nor@0 {
>> + compatible = "jedec,spi-nor";
>> + reg = <0>;
>> + };
>> +};
>> diff --git a/drivers/mtd/spi-nor/Kconfig b/drivers/mtd/spi-nor/Kconfig
>> index 2fe2a7e..7fe1564 100644
>> --- a/drivers/mtd/spi-nor/Kconfig
>> +++ b/drivers/mtd/spi-nor/Kconfig
>> @@ -30,6 +30,12 @@ config SPI_FSL_QUADSPI
>> This controller does not support generic SPI. It only supports
>> SPI NOR.
>>
>> +config SPI_HISI_SFC
>> + tristate "Hisilicon SPI-NOR Flash Controller(SFC)"
>> + depends on ARCH_HISI
>> + help
>> + This enables support for hisilicon SPI-NOR flash controller.
>> +
>> config SPI_NXP_SPIFI
>> tristate "NXP SPI Flash Interface (SPIFI)"
>> depends on OF && (ARCH_LPC18XX || COMPILE_TEST)
>> @@ -41,4 +47,5 @@ config SPI_NXP_SPIFI
>> Flash. Enable this option if you have a device with a SPIFI
>> controller and want to access the Flash as a mtd device.
>>
>> +
>
> Drop this spurious change.
OK. Thank you. I'll pay more attention to this later.
>
>> endif # MTD_SPI_NOR
>> diff --git a/drivers/mtd/spi-nor/Makefile b/drivers/mtd/spi-nor/Makefile
>> index e53333e..8cea3c5 100644
>> --- a/drivers/mtd/spi-nor/Makefile
>> +++ b/drivers/mtd/spi-nor/Makefile
>> @@ -1,3 +1,4 @@
>> obj-$(CONFIG_MTD_SPI_NOR) += spi-nor.o
>> obj-$(CONFIG_SPI_FSL_QUADSPI) += fsl-quadspi.o
>> +obj-$(CONFIG_SPI_HISI_SFC) += hisi-sfc.o
>> obj-$(CONFIG_SPI_NXP_SPIFI) += nxp-spifi.o
>> diff --git a/drivers/mtd/spi-nor/hisi-sfc.c b/drivers/mtd/spi-nor/hisi-sfc.c
>> new file mode 100644
>> index 0000000..fd9649a
>> --- /dev/null
>> +++ b/drivers/mtd/spi-nor/hisi-sfc.c
>> @@ -0,0 +1,505 @@
>> +/* HiSilicon SPI Nor Flash Controller Driver
>> + *
>> + * Copyright (c) 2015 HiSilicon Technologies Co., Ltd.
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> + * it under the terms of the GNU General Public License as published by
>> + * the Free Software Foundation; either version 2 of the License, or
>> + * (at your option) any later version.
>> + *
>> + * This program is distributed in the hope that it will be useful,
>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>> + * GNU General Public License for more details.
>> + *
>> + * You should have received a copy of the GNU General Public License
>> + * along with this program. If not, see <http://www.gnu.org/licenses/>.
>> + */
>> +#include <linux/slab.h>
>> +#include <linux/module.h>
>> +#include <linux/clk.h>
>> +#include <linux/dma-mapping.h>
>> +#include <linux/mtd/mtd.h>
>> +#include <linux/of_platform.h>
>> +#include <linux/mtd/spi-nor.h>
>
> Some say to alphabetize includes. I don't care so much, but at least
> group subdirectories.
Sorry about that. I'll reorder them.
>
> Rob
>
> .
>
Jiancheng
.
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