Hi Andy,
Hmm... looks like it is code done by me :-)
So little explanation shall be given.
This code is necessary for some targets (like Samsung's Goni) which
can only support 4 bit MMC mode.
for (; width = 0; width--) {
So for FSL ESDHC, the width = 3, after
: [U-Boot] [PATCH] powerpc/esdhc: force the bus width to 4bit
Hmm... looks like it is code done by me :-) So little explanation
shall be given.
This code is necessary for some targets (like Samsung's Goni) which
can only support 4 bit MMC mode.
for (; width = 0; width
Hi,
Andy has sent the patch related with this problem.
Check the patch [RFC] mmc: Properly determine maximum supported bus width
Best Regards,
Jaehoon Chung
decide the best workaround was to cripple our controller by eliminating
support for 8-bit?
I see 12bit width when using mmcinfo, then
; l...@theia.denx.de
Subject: Re: [U-Boot] [PATCH] powerpc/esdhc: force the bus width to 4bit
Hi,
Andy has sent the patch related with this problem.
Check the patch [RFC] mmc: Properly determine maximum supported bus
width
Best Regards,
Jaehoon Chung
decide the best workaround
[mailto:jh80.ch...@samsung.com]
Sent: Friday, November 02, 2012 10:03 AM
To: Huang Changming-R66093
Cc: Andy Fleming; Lukasz Majewski; Jaehoon Chung; Marek Vasut; u-
b...@lists.denx.de; Wen; l...@theia.denx.de
Subject: Re: [U-Boot] [PATCH] powerpc/esdhc: force the bus width to 4bit
Hi
Hi Jaehoon,
Hi, Lukasz,
For the current u-boot codes, only 4bit/1bit SD/SDHC bus width
is
support.
So for MMC card, we also support 4bit bus width, otherwiase, we
will
get the 12bit bus width, which is not correct:
Andy ... can you please explain? I don't quite understand the
Hi Lukasz,
width = ((mmc-host_caps MMC_MODE_MASK_WIDTH_BITS)
MMC_MODE_WIDTH_BITS_SHIFT);
This code has the problem. If width is set to 0x3,
then BUS_WIDTH field of ext_csd register is set to 0x3.
Value 0x3 is nothing.(It's reserved)
If we want to set
Of Huang Changming-R66093
Sent: Wednesday, October 31, 2012 10:08 AM
To: Andy Fleming; Marek Vasut
Cc: u-b...@linux.freescale.net
Subject: Re: [u-boot] [PATCH] powerpc/esdhc: force the bus width to 4bit
Below is the old codes (width = 2):
} else {
for (width
Dear Huang Changming-R66093,
Reposting _AGAIN_ because you again discarded the U-Boot ML address.
Best Regards
Jerry Huang
Can you please fix your mailer?
-Original Message-
From: Marek Vasut [mailto:ma...@denx.de]
Sent: Thursday, November 01, 2012 10:26 AM
To: Huang
-Original Message-
From: Marek Vasut [mailto:ma...@denx.de]
Sent: Thursday, November 01, 2012 11:06 AM
To: Huang Changming-R66093
Cc: Andy Fleming; u-b...@linux.freescale.net; u-boot@lists.denx.de
Subject: Re: [PATCH] powerpc/esdhc: force the bus width to 4bit
Dear Huang
Hmm... looks like it is code done by me :-)
So little explanation shall be given.
This code is necessary for some targets (like Samsung's Goni) which can
only support 4 bit MMC mode.
for (; width = 0; width--) {
So for FSL ESDHC, the width = 3, after implement mmc_switch
On 10/23/2012 06:50 PM, Marek Vasut wrote:
Dear Huang Changming-R66093,
Best Regards
Jerry Huang
-Original Message-
From: Marek Vasut [mailto:ma...@denx.de]
Sent: Tuesday, October 23, 2012 3:24 PM
To: Huang Changming-R66093
Cc: u-boot@lists.denx.de; Andy Fleming
Subject: Re:
Hi Jaehoon,
On 10/23/2012 06:50 PM, Marek Vasut wrote:
Dear Huang Changming-R66093,
Best Regards
Jerry Huang
-Original Message-
From: Marek Vasut [mailto:ma...@denx.de]
Sent: Tuesday, October 23, 2012 3:24 PM
To: Huang Changming-R66093
Cc: u-boot@lists.denx.de; Andy
Hi, Lukasz,
For the current u-boot codes, only 4bit/1bit SD/SDHC bus width is
support.
So for MMC card, we also support 4bit bus width, otherwiase, we
will
get the 12bit bus width, which is not correct:
Andy ... can you please explain? I don't quite understand the
problem, I thought we
Dear chang-ming.hu...@freescale.com,
From: Jerry Huang chang-ming.hu...@freescale.com
For the current u-boot codes, only 4bit/1bit SD/SDHC bus width is support.
So for MMC card, we also support 4bit bus width,
otherwiase, we will get the 12bit bus width, which is not correct:
Andy ... can
Best Regards
Jerry Huang
-Original Message-
From: Marek Vasut [mailto:ma...@denx.de]
Sent: Tuesday, October 23, 2012 3:24 PM
To: Huang Changming-R66093
Cc: u-boot@lists.denx.de; Andy Fleming
Subject: Re: [PATCH] powerpc/esdhc: force the bus width to 4bit
Dear
Dear Huang Changming-R66093,
Best Regards
Jerry Huang
-Original Message-
From: Marek Vasut [mailto:ma...@denx.de]
Sent: Tuesday, October 23, 2012 3:24 PM
To: Huang Changming-R66093
Cc: u-boot@lists.denx.de; Andy Fleming
Subject: Re: [PATCH] powerpc/esdhc: force the bus
Dear chang-ming.hu...@freescale.com,
From: Jerry Huang chang-ming.hu...@freescale.com
For the current u-boot codes, only 4bit/1bit SD/SDHC bus width is
support.
So for MMC card, we also support 4bit bus width, otherwiase, we
will
get the 12bit bus width,
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