UPM values update

キャンセル
次の結果を表示 
表示  限定  | 次の代わりに検索 
もしかして: 

UPM values update

2,364件の閲覧回数
m_syed_ahmed
Contributor III

We are working on the MPC8248 custom board. We have different timing valued SRAM chips. How to update the timing values for UPM devices? How does the UPM values obtained?

タグ(2)
0 件の賞賛
8 返答(返信)

2,275件の閲覧回数
yipingwang
NXP TechSupport
NXP TechSupport

Please refer to "11.6.2 Programming the UPMs" in https://www.nxp.com.cn/docs/en/reference-manual/MPC8272RM.pdf.

0 件の賞賛

2,056件の閲覧回数
m_syed_ahmed
Contributor III

Is it possible to re-configure the UPM values at kernel level?

0 件の賞賛

1,990件の閲覧回数
yipingwang
NXP TechSupport
NXP TechSupport

Please refer to the following files in the BSP.

arch/powerpc/sysdev/fsl_upm.c

include/asm-powerpc/fsl_upm.h

0 件の賞賛

1,986件の閲覧回数
m_syed_ahmed
Contributor III

Am not able to find that file.  Can you tell in which kernel version those files were available? Also, we are working on 2.6.20. Is it possible to port those files to this version?

0 件の賞賛

1,969件の閲覧回数
yipingwang
NXP TechSupport
NXP TechSupport

Please refer to the following.

./drivers/mtd/nand/fsl_upm.c

0 件の賞賛

1,967件の閲覧回数
m_syed_ahmed
Contributor III

My kernel 2.6.20 doesn't have that file too. But I found that in the latest kernels. Is it possible to port that file to 2.6.20?

0 件の賞賛

1,847件の閲覧回数
yipingwang
NXP TechSupport
NXP TechSupport
Please try to back port that driver file in your Linux Kernel.
0 件の賞賛

1,847件の閲覧回数
yipingwang
NXP TechSupport
NXP TechSupport
Please try to back port that driver file in your Linux Kernel.
0 件の賞賛