From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1751789AbdJZFLi (ORCPT <rfc822;w@1wt.eu>);
        Thu, 26 Oct 2017 01:11:38 -0400
Received: from smtp.codeaurora.org ([198.145.29.96]:47998 "EHLO
        smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1750919AbdJZFLd (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Thu, 26 Oct 2017 01:11:33 -0400
DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 4507260314
Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org
Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=architt@codeaurora.org
Subject: Re: [PATCH v3 4/6] drm/rockchip/dsi: add dual mipi channel support
To: Sean Paul <seanpaul@chromium.org>,
        Nickey Yang <nickey.yang@rock-chips.com>
Cc: mark.yao@rock-chips.com, robh+dt@kernel.org, heiko@sntech.de,
        mark.rutland@arm.com, airlied@linux.ie, linux-kernel@vger.kernel.org,
        dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org,
        briannorris@chromium.org, hl@rock-chips.com, zyw@rock-chips.comg,
        xbl@rock-chips.com
References: <1508903463-7254-1-git-send-email-nickey.yang@rock-chips.com>
 <1508903463-7254-4-git-send-email-nickey.yang@rock-chips.com>
 <20171025080448.pa465q5jofxhqdn4@art_vandelay>
From: Archit Taneja <architt@codeaurora.org>
Message-ID: <bfb92284-fa18-ab3e-1f15-6d8344d2a0ee@codeaurora.org>
Date: Thu, 26 Oct 2017 10:41:26 +0530
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101
 Thunderbird/52.1.1
MIME-Version: 1.0
In-Reply-To: <20171025080448.pa465q5jofxhqdn4@art_vandelay>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org



On 10/25/2017 01:34 PM, Sean Paul wrote:
> On Wed, Oct 25, 2017 at 11:51:01AM +0800, Nickey Yang wrote:
>> This patch add dual mipi channel support:
>> 1.add definition of dsi1 register and grf operation.
>> 2.dsi0 and dsi1 will work in master and slave mode
>> when driving dual mipi panel.
>>
>> Signed-off-by: Nickey Yang <nickey.yang@rock-chips.com>
>> ---
> 
> In the last revision, I asked you to provide changelog between revisions,
> *please* do this. You received review on the last version and a bunch of the
> feedback hasn't been taken into account with no explanation as to why. Please go
> back to the last version, read the reviews that people were generous enough to
> give and either fix the code or explain why you're not.
> 
>>   drivers/gpu/drm/rockchip/dw-mipi-dsi.c      | 377 ++++++++++++++++++++--------
>>   drivers/gpu/drm/rockchip/rockchip_drm_drv.h |   1 +
>>   drivers/gpu/drm/rockchip/rockchip_drm_vop.c |   2 +
>>   drivers/gpu/drm/rockchip/rockchip_drm_vop.h |   3 +
>>   drivers/gpu/drm/rockchip/rockchip_vop_reg.c |   1 +
>>   5 files changed, 279 insertions(+), 105 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
>> index 589b420..25e7b77 100644
>> --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
>> +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
> 
> <snip />
> 
>> +static int rockchip_dsi_dual_channel_probe(struct dw_mipi_dsi *dsi)
>> +{
>> +	struct device_node *np;
>> +	struct platform_device *secondary;
>> +
>> +	np = of_parse_phandle(dsi->dev->of_node, "rockchip,dual-channel", 0);
>> +	if (np) {
>> +		secondary = of_find_device_by_node(np);
>> +		dsi->slave = platform_get_drvdata(secondary);
>> +		of_node_put(np);
>> +
>> +		if (!dsi->slave)
>> +			return -EPROBE_DEFER;
> 
> Archit asked you not to do this in the previous review.

I've replied with some more details to the patch which adds this in the DT
binding doc.

Thanks,
Archit

> 
>> +
>> +		dsi->slave->master = dsi;
>> +	}
>> +
>> +	return 0;
>> +}
> 
> <snip />
> 
>> -- 
>> 1.9.1
>>
> 

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project