Hello Prabhakar,

Am 26.08.2019 um 10:11 schrieb Prabhakar Kushwaha:
Dear Heiko,

-----Original Message-----
From: Heiko Schocher <h...@denx.de>
Sent: Monday, August 26, 2019 11:08 AM
To: Prabhakar Kushwaha <prabhakar.kushw...@nxp.com>
Cc: u-boot@lists.denx.de; York Sun <york....@nxp.com>; Chuanhua Han
<chuanhua....@nxp.com>
Subject: Re: [U-Boot] [PATCH v1] ddr, fsl: add DM_I2C support

Hello Prabhakar,

Am 22.08.2019 um 13:33 schrieb Prabhakar Kushwaha:
Dear Heiko,


-----Original Message-----
From: U-Boot <u-boot-boun...@lists.denx.de> On Behalf Of Heiko
Schocher
Sent: Tuesday, July 16, 2019 9:29 AM
To: u-boot@lists.denx.de
Cc: York Sun <york....@nxp.com>
Subject: [U-Boot] [PATCH v1] ddr, fsl: add DM_I2C support

add DM_I2C support for this driver.

Signed-off-by: Heiko Schocher <h...@denx.de>

---

Did not fixed checkpatch warning:

CHECK: Prefer kernel type 'u8' over 'uint8_t'
+       uint8_t buf = 0;

Travis build, see:
https://travis
-ci.org%2Fhsdenx%2Fu-boot-

test%2Fbuilds%2F558858904&amp;data=02%7C01%7Cprabhakar.kushwaha%

40nxp.com%7C2c5f1ecc6ff9417a8ccb08d709a20297%7C686ea1d3bc2b4c6fa92

cd99c5c301635%7C0%7C0%7C636988463754459178&amp;sdata=H%2FkQV%2
Bavu2EfajG3El5M%2FsKyuSPO6Nn0QRMVpzsvsUY%3D&amp;reserved=0

   drivers/ddr/fsl/main.c | 88 ++++++++++++++++++++++++++++++++++++--
----

How you tested both NXP's powerpc and ARM platforms as fsl i2c is yet to
move to DM model?
Or my understanding is wrong.

I only tested on powerpc (preciser socrates_defconfig) platform ...

But I see that now in current mainline there is applied a change in
drivers/ddr/fsl/main.c from commit:

commit 0eba65d2013e5517e70cc9b3d467ba8183b54cd9
Author: Chuanhua Han <chuanhua....@nxp.com>
Date:   Wed Jul 10 21:00:20 2019 +0800

boards: lx2160a: Add support of I2C driver model

      DM_I2C_COMPAT is a compatibility layer that allows using the non-DM I2C
      API when DM_I2C is used. When DM_I2C_COMPAT is not enabled for
      compilation, a compilation error will be generated. This patch solves
      the problem that the i2c-related api of the lx2160a platform does not
      support dm.

      Signed-off-by: Chuanhua Han <chuanhua....@nxp.com>
      Reviewed-by: Prabhakar Kushwaha <prabhakar.kushw...@nxp.com>

Which does some similiar change ... but I think this already applied patch
introduces more ifdefs and code ...


Hmm.. just tried to compile U-Boot for the socrates board (with DM
changes) without my patch ... I get compilererror:

/home/hs/data/Entwicklung/abb/uboot-rework/u-boot/drivers/ddr/fsl/main.c:
In function '__get_spd':
/home/hs/data/Entwicklung/abb/uboot-rework/u-
boot/drivers/ddr/fsl/main.c:144:52: error: 'dev'
undeclared (first use in this function)
    ret = i2c_get_chip_for_busnum(0, i2c_address, 1, &dev);
                                                      ^~~
/home/hs/data/Entwicklung/abb/uboot-rework/u-
boot/drivers/ddr/fsl/main.c:144:52: note: each undeclared identifier is reported
only once for each function it appears in
make[2]: *** [/home/hs/data/Entwicklung/abb/uboot-rework/u-
boot/scripts/Makefile.build:278:
drivers/ddr/fsl/main.o] Fehler 1
make[1]: *** [/home/hs/data/Entwicklung/abb/uboot-rework/u-
boot/Makefile:1588: drivers/ddr/fsl] Fehler 2
make[1]: *** Es wird auf noch nicht beendete Prozesse gewartet....
    CC      drivers/i2c/fsl_i2c.o
    CC      cmd/elf.o

:-(



My bad. I only tested build/run on NXP's ARM platforms.
As I am working on PowerPC pull request, I missed it.




Ok, fixed this fast and dirty with:

diff --git a/drivers/ddr/fsl/main.c b/drivers/ddr/fsl/main.c index
ac0783b428..5f05a2c863 100644
--- a/drivers/ddr/fsl/main.c
+++ b/drivers/ddr/fsl/main.c
@@ -91,6 +91,7 @@ static void __get_spd(generic_spd_eeprom_t *spd, u8
i2c_address)
   #ifdef CONFIG_SYS_FSL_DDR4
          uint8_t dummy = 0;
   #endif
+       struct udevice *dev;

   #ifndef CONFIG_DM_I2C
          i2c_set_bus_num(CONFIG_SYS_SPD_BUS_NUM);

and now code compiles and after flashing U-Boot I see:

U-Boot 2019.10-rc2-00151-ge4b57b4557-dirty (Aug 26 2019 - 07:17:47 +0200)

CPU:   8544, Version: 2.1, (0x80340121)
Core:  e500, Version: 2.3, (0x80210023)
Clock Configuration:
         CPU0:666.667 MHz,
         CCB:333.333 MHz,
         DDR:166.667 MHz (333.333 MT/s data rate), LBC:333.333 MHz
L1:    D-cache 32 KiB enabled
         I-cache 32 KiB enabled
Model: abb,socrates
Board: Socrates, serial# 1001321865
PCI1:  32 bit, 33 MHz (PCI_CLK)
DRAM:  Detected UDIMM MSC2S512M667C1-H
512 MiB (DDR2, 64-bit, CL=3, ECC off)
Flash: 32 MiB
L2:    256 KiB enabled
NAND:  1024 MiB
Loading Environment from Flash... OK
In:    serial
Out:   serial
Err:   serial
Net:   TSEC0, TSEC1
Hit any key to stop autoboot:  0
=>

So this works also for me ...

Hmm... the change from commit
0eba65d2013e5517e70cc9b3d467ba8183b54cd9
doubles code for DM and none DM case ... I don;t like this.

May you can look through my rebased patch [1] and may test it ?

If this is OK, I can send it as a v2.

bye,
Heiko

[1] rebased patch
  From 0180ade1202d806db7b577230b240605e5ccea7e Mon Sep 17 00:00:00
2001
From: Heiko Schocher <h...@denx.de>
Date: Mon, 26 Aug 2019 07:09:27 +0200
Subject: [PATCH] ddr, fsl: add DM_I2C support

add DM_I2C support for this driver.

Signed-off-by: Heiko Schocher <h...@denx.de>
Patch-cc: York Sun <york....@nxp.com>
Patch-cc: Prabhakar Kushwaha <prabhakar.kushw...@nxp.com>
Patch-cc: Chuanhua Han <chuanhua....@nxp.com>

Series-to: uboot
Series-version: 2

Commit-notes:

Did not fixed checkpatch warning:

CHECK: Prefer kernel type 'u8' over 'uint8_t'
+       uint8_t buf = 0;

Travis build, see:
END


Please send v2 version.  I will test on both ARM and PowerPC platforms
And also get reviewed from internal IP owners . .

Ok, started travis build, if it is fine, I send the v2.

bye,
Heiko
--
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-52   Fax: +49-8142-66989-80   Email: h...@denx.de
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