Re: [U-Boot] [PATCH 0/2] Improve Raspberry Pi mmc writes.
On 04/02/2017 03:58 PM, Alex Deymo wrote:
When experimenting with fastboot from U-Boot on the Raspberry Pi 3 we found that the writes to the sdcard are much more slow than when accessing it from the userspace. These two patches speed up the write and allow us to reliably write the sdcard from U-Boot.
I'm not sure you can see this email. If you can't receive this, I will resend with my gmail account.
I want to know the situation after removing the BROKEN_R1B quirks.
Best Regards, Jaehoon Chung
Alex Deymo (1): mmc: sdhci: Wait for SDHCI_INT_DATA_END when transferring.
Jocelyn Bohr (1): mmc: bcm2835_sdhci: Speed up mmc writes.
drivers/mmc/bcm2835_sdhci.c | 8 ++++++-- drivers/mmc/sdhci.c | 15 +++++++++++---- 2 files changed, 17 insertions(+), 6 deletions(-)
2017-04-06 21:53 GMT-07:00 Jaehoon Chung jh80.chung@samsung.com:
On 04/02/2017 03:58 PM, Alex Deymo wrote:
When experimenting with fastboot from U-Boot on the Raspberry Pi 3 we found that the writes to the sdcard are much more slow than when accessing it from the userspace. These two patches speed up the write and allow us to reliably write the sdcard from U-Boot.
I'm not sure you can see this email. If you can't receive this, I will resend with my gmail account.
I can, I'm on the list. If you cc me directly the chances of me seeing it are much higher.
I want to know the situation after removing the BROKEN_R1B quirks.
How would I test that? Basically trying to write 100s of MB to mmc on the rpi3 was failing very often after applying the "Speed up mmc writes" patch. Without said patch this was not a problem because the write were sooooooo slow that we would never send two write commands too close to each other. Do you want me re-test applying only "Speed up mmc writes." on top of master without the second patch (Wait for SDHCI_INT_DATA_END when transferring)? Or just re-test the mmc speed/reliability without neither of these patches? deymo
On 2017년 04월 08일 03:33, Alex Deymo wrote:
2017-04-06 21:53 GMT-07:00 Jaehoon Chung jh80.chung@samsung.com:
On 04/02/2017 03:58 PM, Alex Deymo wrote:
When experimenting with fastboot from U-Boot on the Raspberry Pi 3 we found that the writes to the sdcard are much more slow than when accessing it from the userspace. These two patches speed up the write and allow us to reliably write the sdcard from U-Boot.
I'm not sure you can see this email. If you can't receive this, I will resend with my gmail account.
I can, I'm on the list. If you cc me directly the chances of me seeing it are much higher.
Sorry for sending directly. I have some problem for sending with Samsung account.
I want to know the situation after removing the BROKEN_R1B quirks.
Refer to below patches..already applied.
https://patchwork.ozlabs.org/patch/647364/ https://patchwork.ozlabs.org/patch/647365/
Exynos boards what used the sdhci controller were very slow before removing BROKEN_R1B. When i posted the BROKEN_R1B, it was too old..I think this quirk doesn't need anymore. But i can't test other boards what used this quirks.
If you can test it..it's helpful to me.
How would I test that? Basically trying to write 100s of MB to mmc on the rpi3 was failing very often after applying the "Speed up mmc writes" patch. Without said patch this was not a problem because the write were sooooooo slow that we would never send two write commands too close to each other. Do you want me re-test applying only "Speed up mmc writes." on top of master without the second patch (Wait for SDHCI_INT_DATA_END when transferring)? Or just re-test the mmc speed/reliability without neither of these patches? deymo _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
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Jaehoon Chung