From: "Behme Dirk (CM/ESO2)" <dirk.behme-V5te9oGctAVWk0Htik3J/w@public.gmane.org>
To: Sergei Shtylyov
<sergei.shtylyov-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
Cc: <devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Philipp Zabel <p.zabel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>,
Mason Yang <masonccyang-I/i+R0kf0WFNUHwG+Fw1Kw@public.gmane.org>,
<linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Chris Brandt
<chris.brandt-zM6kxYcvzFBBDgjK7y7TUQ@public.gmane.org>,
<linux-renesas-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH RFC 2/2] memory: add Renesas RPC-IF driver
Date: Mon, 24 Feb 2020 06:46:23 +0100 [thread overview]
Message-ID: <cba1e2ec-4896-23ef-ef7b-0f80d4310127@de.bosch.com> (raw)
In-Reply-To: <5603f393-554d-e2a8-c2d8-6bafc20f4169-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
On 22.02.2020 21:42, Sergei Shtylyov wrote:
> On 02/10/2020 01:21 PM, Behme Dirk (CM/ESO2) wrote:
>
>>> Add the memory driver for Renesas RPC-IF which registers either SPI or
>>> HyperFLash device depending on the contents of the device tree subnode.
>>> It also provides the absract "back end" device APIs that can be used by
>>> the "front end" SPI/MTD drivers to talk to the real hardware.
>>>
>>> Based on the original patch by Mason Yang <masonccyang-I/i+R0kf0WFNUHwG+Fw1Kw@public.gmane.org>.
>>>
>>> Signed-off-by: Sergei Shtylyov <sergei.shtylyov-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
>>
>>
>> FYI, please find below [1] the changes I did locally on this driver. It seems to read & write successfully on my custom M3 (R8A7796) device, now.
>
> Not for me...
> BTW, your patch had whitespace ruined, I had to apply it by hand, you'd better
> attach the patches, not paste. :-/
Ok. There are other mailing lists complaining about attachments ;)
Even better, maybe we should put what we have so far publicly anywhere,
e.g. github.
>> Best regards
>>
>> Dirk
>>
>> [1]
>>
>> From d72b805cc461ab1e9747c973e9be84e7abb8f828 Mon Sep 17 00:00:00 2001
>> From: Dirk Behme <dirk.behme-V5te9oGctAVWk0Htik3J/w@public.gmane.org>
>> Date: Tue, 4 Feb 2020 08:39:31 +0100
>> Subject: [PATCH] memory: renesas-rpc-if: Correct the STRTIM and some other
>> clean up
>>
>> This is required to make the driver work correctly in my M3 environment.
>>
>> Signed-off-by: Dirk Behme <dirk.behme-V5te9oGctAVWk0Htik3J/w@public.gmane.org>
>> ---
>> drivers/memory/renesas-rpc-if.c | 42 ++++++++++++++++++++-------------
>> 1 file changed, 25 insertions(+), 17 deletions(-)
>>
>> diff --git a/drivers/memory/renesas-rpc-if.c b/drivers/memory/renesas-rpc-if.c
>> index 04be92b64bfa..f4356b066384 100644
>> --- a/drivers/memory/renesas-rpc-if.c
>> +++ b/drivers/memory/renesas-rpc-if.c
> [...]
>> @@ -513,19 +525,15 @@ ssize_t rpcif_dirmap_read(struct rpcif *rpc, u64 offs, size_t len, void *buf)
>> pm_runtime_get_sync(rpc->dev);
>>
>> regmap_update_bits(rpc->regmap, RPCIF_CMNCR, RPCIF_CMNCR_MD, 0);
>> - regmap_write(rpc->regmap, RPCIF_DRCR,
>> - RPCIF_DRCR_RBURST(32) | RPCIF_DRCR_RBE);
>> - regmap_write(rpc->regmap, RPCIF_DRCMR, rpc->command);
>> - regmap_write(rpc->regmap, RPCIF_DREAR,
>> - RPCIF_DREAR_EAV(offs >> 25) | RPCIF_DREAR_EAC(1));
>> - regmap_write(rpc->regmap, RPCIF_DROPR, rpc->option);
>> - regmap_write(rpc->regmap, RPCIF_DRENR,
>> - rpc->enable & ~RPCIF_SMENR_SPIDE(0xF));
>> - regmap_write(rpc->regmap, RPCIF_DRDMCR, rpc->dummy);
>> - regmap_write(rpc->regmap, RPCIF_DRDRENR, rpc->ddr);
>
> The driver somehow works only with this left in place (with 2 bytes eaten
> as before), otherwise all the flash reads all 0xff (via dirmap).
Do you boot from hyperflash?
The system I'm using for testing boots from hyperflash. So most probably
all registers I don't touch in the driver are put into a reasonable
state by the boot code, already. If you don't boot from hyperflash, that
at least would explain our different behavior.
Best regards
Dirk
next prev parent reply other threads:[~2020-02-24 5:46 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-10 19:34 [PATCH RFC 0/2] Add Renesas RPC-IF support Sergei Shtylyov
2019-12-10 19:37 ` [PATCH RFC 1/2] dt-bindings: memory: document Renesas RPC-IF bindings Sergei Shtylyov
2019-12-19 20:38 ` Rob Herring
2019-12-10 19:39 ` [PATCH RFC 2/2] memory: add Renesas RPC-IF driver Sergei Shtylyov
2019-12-11 9:58 ` Philipp Zabel
2020-02-10 10:21 ` Behme Dirk (CM/ESO2)
[not found] ` <5760bcdb-e44b-6f18-7262-9526684e5780-V5te9oGctAVWk0Htik3J/w@public.gmane.org>
2020-02-22 20:42 ` Sergei Shtylyov
[not found] ` <5603f393-554d-e2a8-c2d8-6bafc20f4169-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
2020-02-24 5:46 ` Behme Dirk (CM/ESO2) [this message]
[not found] ` <cba1e2ec-4896-23ef-ef7b-0f80d4310127-V5te9oGctAVWk0Htik3J/w@public.gmane.org>
2020-02-24 17:28 ` Chris Brandt
2020-02-24 18:59 ` Sergei Shtylyov
2020-02-25 9:33 ` Behme Dirk (CM/ESO2)
[not found] ` <3a182ac7-8d41-cdc7-2b87-7c503f68a426-V5te9oGctAVWk0Htik3J/w@public.gmane.org>
2020-02-25 20:41 ` Sergei Shtylyov
[not found] ` <f21a9444-9541-6558-f5f5-ca0b733768ff-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
2020-02-26 9:54 ` Behme Dirk (CM/ESO2)
2020-02-27 20:32 ` Sergei Shtylyov
2019-12-11 14:33 ` [PATCH RFC 0/2] Add Renesas RPC-IF support Chris Brandt
2019-12-11 16:08 ` Sergei Shtylyov
2019-12-11 16:20 ` Sergei Shtylyov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=cba1e2ec-4896-23ef-ef7b-0f80d4310127@de.bosch.com \
--to=dirk.behme-v5te9ogctavwk0htik3j/w@public.gmane.org \
--cc=chris.brandt-zM6kxYcvzFBBDgjK7y7TUQ@public.gmane.org \
--cc=devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-renesas-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=masonccyang-I/i+R0kf0WFNUHwG+Fw1Kw@public.gmane.org \
--cc=p.zabel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org \
--cc=sergei.shtylyov-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).