| Message ID | 1490110822-3310-1-git-send-email-al.kochet@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi, Am Dienstag, 21. März 2017, 18:40:22 CET schrieb Alexander Kochetkov: > The patch set SD clock frequency to maximum possible to SD-card > (50MHz). This change actual clock frequency from 32MHz to 48MHz > (speedup 1.5X). > > Banner line before patch: 'mmc_host mmc0: Bus speed (slot 0) = 32000000Hz > (slot req 50000000Hz, actual 32000000HZ div = 0)'. > Banner line after patch: 'mmc_host mmc0: Bus speed (slot 0) = 96000000Hz > (slot req 50000000Hz, actual 48000000HZ div = 1)' > > Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com> sorry, but I will not apply this patch at this time. When testing on my radxarock with the card I always use upon entering the rootfs everything explodes with -110 errors, while without that patch the card runs stable as far as I can tell. I also don't have the time to investigate further right now though. Heiko
> 22 марта 2017 г., в 19:47, Heiko Stuebner <heiko@sntech.de> написал(а): > > sorry, but I will not apply this patch at this time. > When testing on my radxarock with the card I always use upon entering the > rootfs everything explodes with -110 errors, while without that patch the card > runs stable as far as I can tell. > I also don't have the time to investigate further right now though. Ok. Let leave as is for now. My radxa worked stable for a year with this settings. And my custom rk3188 based board also has this setting. Kernel 4.8. And I saw -110 errors only then I disconnect SD-card from board.
> 22 марта 2017 г., в 20:04, Alexander Kochetkov <al.kochet@gmail.com> написал(а): > > Ok. Let leave as is for now. > > My radxa worked stable for a year with this settings. Ok, I not sure what my radxa worked stable with this settings. Hieko, thanks for catching that. Sorry for your time.
Am Mittwoch, 22. März 2017, 20:14:36 CET schrieb Alexander Kochetkov: > > > 22 марта 2017 г., в 20:04, Alexander Kochetkov <al.kochet@gmail.com> написал(а): > > > > Ok. Let leave as is for now. > > > > My radxa worked stable for a year with this settings. > > Ok, I not sure what my radxa worked stable with this settings. > Hieko, thanks for catching that. > > Sorry for your time. no problem :-) Hopefully some time in the future we'll be able to figure out where the instability on my rock came from.
diff --git a/arch/arm/boot/dts/rk3188-radxarock.dts b/arch/arm/boot/dts/rk3188-radxarock.dts index 1da46d1..5b7daa4 100644 --- a/arch/arm/boot/dts/rk3188-radxarock.dts +++ b/arch/arm/boot/dts/rk3188-radxarock.dts @@ -302,6 +302,7 @@ pinctrl-0 = <&sd0_clk>, <&sd0_cmd>, <&sd0_cd>, <&sd0_bus4>; vmmc-supply = <&vcc_sd0>; + clock-frequency = <50000000>; bus-width = <4>; cap-mmc-highspeed; cap-sd-highspeed;
The patch set SD clock frequency to maximum possible to SD-card (50MHz). This change actual clock frequency from 32MHz to 48MHz (speedup 1.5X). Banner line before patch: 'mmc_host mmc0: Bus speed (slot 0) = 32000000Hz (slot req 50000000Hz, actual 32000000HZ div = 0)'. Banner line after patch: 'mmc_host mmc0: Bus speed (slot 0) = 96000000Hz (slot req 50000000Hz, actual 48000000HZ div = 1)' Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com> --- arch/arm/boot/dts/rk3188-radxarock.dts | 1 + 1 file changed, 1 insertion(+)