* eMMC probe in imx8mm
@ 2019-07-05 14:04 Yazdani, Reyhaneh
2019-07-09 9:46 ` Sascha Hauer
0 siblings, 1 reply; 4+ messages in thread
From: Yazdani, Reyhaneh @ 2019-07-05 14:04 UTC (permalink / raw)
To: barebox
Hello everyone,
I have brought up Barebox on imx8mm-evk board. Barebox is programmed on SD-card.
In the Barebox console, when I probe eMMC, I will receive I/O error.
Therefore, similar to the imx8mq device tree, I added clk node to assign
clock-parent and clock-rates of the assigned clock of the eMMC (usdhc3):
&clk {
assigned-clocks = <&clk IMX8MM_CLK_USDHC3_ROOT>;
assigned-clock-parents = <&clk IMX8MM_SYS_PLL1_400M>;
assigned-clock-rates = <200000000>;
};
Now, eMMC probe works and eMMC is detected. But when I want to boot from eMMC,
Loading ARM aarch64 Linux image '/mnt/mmc2/Image' takes about 13-14 seconds!!
Does anyone have an idea where is the problem? It would related to the clock,
but which part?
Best regards,
Reyhaneh
--
Reyhaneh Yazdani
Data Modul AG TEL: +49-89-56017-154
Embedded development FAX: +49-89-56017-119
Linux - Development RG: HR-Muenchen B-85591
Landsberger Str. 322 D-80687 Muenchen - http://www.data-modul.com
Vertrauliche E-Mail von / Confidential e-mail from: DATA MODUL AG
Vorstand / CEO: Dr. Florian Pesahl
Vorsitzende des Aufsichtsrates / Chairwoman of the Supervisory Board: Kristin D. Russell
Sitz der Gesellschaft / Registered Office: München
Registergericht / Registration Court: München Handelsregister B 85 591
_______________________________________________
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^ permalink raw reply [flat|nested] 4+ messages in thread* Re: eMMC probe in imx8mm
2019-07-05 14:04 eMMC probe in imx8mm Yazdani, Reyhaneh
@ 2019-07-09 9:46 ` Sascha Hauer
2019-07-11 13:30 ` Yazdani, Reyhaneh
2019-07-12 6:12 ` Yazdani, Reyhaneh
0 siblings, 2 replies; 4+ messages in thread
From: Sascha Hauer @ 2019-07-09 9:46 UTC (permalink / raw)
To: Yazdani, Reyhaneh; +Cc: barebox
Hi Reyhaneh,
On Fri, Jul 05, 2019 at 02:04:08PM +0000, Yazdani, Reyhaneh wrote:
> Hello everyone,
>
> I have brought up Barebox on imx8mm-evk board. Barebox is programmed on SD-card.
> In the Barebox console, when I probe eMMC, I will receive I/O error.
>
> Therefore, similar to the imx8mq device tree, I added clk node to assign
> clock-parent and clock-rates of the assigned clock of the eMMC (usdhc3):
>
> &clk {
> assigned-clocks = <&clk IMX8MM_CLK_USDHC3_ROOT>;
> assigned-clock-parents = <&clk IMX8MM_SYS_PLL1_400M>;
> assigned-clock-rates = <200000000>;
> };
>
> Now, eMMC probe works and eMMC is detected. But when I want to boot from eMMC,
>
> Loading ARM aarch64 Linux image '/mnt/mmc2/Image' takes about 13-14 seconds!!
How big is this image?
Is only the eMMC card so slow or the SD card aswell?
Does clk_dump give you any clue which clock rate the usdhc controller
actually has (and is it the same as the other controller with the SD
card)?
Just some questions, I am not very familiar with the i.MX8 clock tree.
Sascha
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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^ permalink raw reply [flat|nested] 4+ messages in thread* Re: eMMC probe in imx8mm
2019-07-09 9:46 ` Sascha Hauer
@ 2019-07-11 13:30 ` Yazdani, Reyhaneh
2019-07-12 6:12 ` Yazdani, Reyhaneh
1 sibling, 0 replies; 4+ messages in thread
From: Yazdani, Reyhaneh @ 2019-07-11 13:30 UTC (permalink / raw)
To: Sascha Hauer; +Cc: barebox
On 7/9/19 11:46 AM, Sascha Hauer wrote:
> Hi Reyhaneh,
>
> On Fri, Jul 05, 2019 at 02:04:08PM +0000, Yazdani, Reyhaneh wrote:
>> Hello everyone,
>>
>> I have brought up Barebox on imx8mm-evk board. Barebox is programmed on SD-card.
>> In the Barebox console, when I probe eMMC, I will receive I/O error.
>>
>> Therefore, similar to the imx8mq device tree, I added clk node to assign
>> clock-parent and clock-rates of the assigned clock of the eMMC (usdhc3):
>>
>> &clk {
>> assigned-clocks = <&clk IMX8MM_CLK_USDHC3_ROOT>;
>> assigned-clock-parents = <&clk IMX8MM_SYS_PLL1_400M>;
>> assigned-clock-rates = <200000000>;
>> };
>>
>> Now, eMMC probe works and eMMC is detected. But when I want to boot from eMMC,
>>
>> Loading ARM aarch64 Linux image '/mnt/mmc2/Image' takes about 13-14 seconds!!
>
> How big is this image?
>
> Is only the eMMC card so slow or the SD card aswell?
>
> Does clk_dump give you any clue which clock rate the usdhc controller
> actually has (and is it the same as the other controller with the SD
> card)?
>
> Just some questions, I am not very familiar with the i.MX8 clock tree.
Hi Sascha,
It was related to the no initialization of PLL-clock. SYS_PLL1 is used as clock
parents for eMMC and it was not initialized in clock driver.
Best regards,
Reyhaneh
--
Reyhaneh Yazdani
Data Modul AG TEL: +49-89-56017-154
Embedded development FAX: +49-89-56017-119
Linux - Development RG: HR-Muenchen B-85591
Landsberger Str. 322 D-80687 Muenchen - http://www.data-modul.com
Vertrauliche E-Mail von / Confidential e-mail from: DATA MODUL AG
Vorstand / CEO: Dr. Florian Pesahl
Vorsitzende des Aufsichtsrates / Chairwoman of the Supervisory Board: Kristin D. Russell
Sitz der Gesellschaft / Registered Office: München
Registergericht / Registration Court: München Handelsregister B 85 591
_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: eMMC probe in imx8mm
2019-07-09 9:46 ` Sascha Hauer
2019-07-11 13:30 ` Yazdani, Reyhaneh
@ 2019-07-12 6:12 ` Yazdani, Reyhaneh
1 sibling, 0 replies; 4+ messages in thread
From: Yazdani, Reyhaneh @ 2019-07-12 6:12 UTC (permalink / raw)
To: Sascha Hauer; +Cc: barebox
On 7/9/19 11:46 AM, Sascha Hauer wrote:
> Hi Reyhaneh,
>
> On Fri, Jul 05, 2019 at 02:04:08PM +0000, Yazdani, Reyhaneh wrote:
>> Hello everyone,
>>
>> I have brought up Barebox on imx8mm-evk board. Barebox is programmed on SD-card.
>> In the Barebox console, when I probe eMMC, I will receive I/O error.
>>
>> Therefore, similar to the imx8mq device tree, I added clk node to assign
>> clock-parent and clock-rates of the assigned clock of the eMMC (usdhc3):
>>
>> &clk {
>> assigned-clocks = <&clk IMX8MM_CLK_USDHC3_ROOT>;
>> assigned-clock-parents = <&clk IMX8MM_SYS_PLL1_400M>;
>> assigned-clock-rates = <200000000>;
>> };
>>
>> Now, eMMC probe works and eMMC is detected. But when I want to boot from eMMC,
>>
>> Loading ARM aarch64 Linux image '/mnt/mmc2/Image' takes about 13-14 seconds!!
>
> How big is this image?
>
> Is only the eMMC card so slow or the SD card aswell?
>
> Does clk_dump give you any clue which clock rate the usdhc controller
> actually has (and is it the same as the other controller with the SD
> card)?
>
> Just some questions, I am not very familiar with the i.MX8 clock tree.
>
> Sascha
>
>
Hi Sascha,
It was related to the no initialization of PLL-clock. SYS_PLL1 is used as clock
parents for eMMC and it was not initialized in clock driver.
Best regards,
Reyhaneh
--
Reyhaneh Yazdani
Data Modul AG TEL: +49-89-56017-154
Embedded development FAX: +49-89-56017-119
Linux - Development RG: HR-Muenchen B-85591
Landsberger Str. 322 D-80687 Muenchen - http://www.data-modul.com
Vertrauliche E-Mail von / Confidential e-mail from: DATA MODUL AG
Vorstand / CEO: Dr. Florian Pesahl
Vorsitzende des Aufsichtsrates / Chairwoman of the Supervisory Board: Kristin D. Russell
Sitz der Gesellschaft / Registered Office: München
Registergericht / Registration Court: München Handelsregister B 85 591
_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox
^ permalink raw reply [flat|nested] 4+ messages in thread
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2019-07-05 14:04 eMMC probe in imx8mm Yazdani, Reyhaneh
2019-07-09 9:46 ` Sascha Hauer
2019-07-11 13:30 ` Yazdani, Reyhaneh
2019-07-12 6:12 ` Yazdani, Reyhaneh
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