eMMC 4.51
Dong Aisheng
b29396 at freescale.com
Fri Oct 18 02:59:31 EDT 2013
Hi Jackey,
The imx6sl SD controller supports SDIO 3.0.
I've verified it with a Broadcom SDIO 3.0 WiFi card and it can be
identified as SDR104 mode.
Regards
Dong Aisheng
On Fri, Oct 18, 2013 at 02:04:01PM +0800, Jackey Shen wrote:
> Hi John,
>
> Does your SD host controller support 3.0 card? As I know, Marvel
> SDIO8797 can work at UHS-I SDR104. Did you test it?
>
> Thanks,
> Jackey
>
> On Thu, Oct 10, 2013 at 2:00 AM, John Tobias <john.tobias.ph at gmail.com> wrote:
> > Hi Jackey,
> >
> > The Marvel SD8797 work fine but there are some cases that the firmware
> > failed to load during the system boot up. Although, we managed it by
> > power cycling the power source of the Marvel chip so that the kernel
> > will able to detect and reinitialize again.
> >
> > The module was running in high speed, 4bit bus width.
> >
> > Here are some info:
> >
> > # iperf -c 192.168.x.x -t 60 -i 10
> > ------------------------------------------------------------
> > Client connecting to 192.168.x.x, TCP port 5001
> > TCP window size: 20.7 KByte (default)
> > ------------------------------------------------------------
> > [ 3] local 192.168.x.x port 52071 connected with 192.168.x.x port 5001
> > [ ID] Interval Transfer Bandwidth
> > [ 3] 0.0-10.0 sec 48.0 MBytes 40.3 Mbits/sec
> > [ 3] 10.0-20.0 sec 53.4 MBytes 44.8 Mbits/sec
> > [ 3] 20.0-30.0 sec 53.8 MBytes 45.1 Mbits/sec
> > [ 3] 30.0-40.0 sec 56.4 MBytes 47.3 Mbits/sec
> > [ 3] 40.0-50.0 sec 54.2 MBytes 45.5 Mbits/sec
> > [ 3] 50.0-60.0 sec 53.5 MBytes 44.9 Mbits/sec
> > [ 3] 0.0-60.0 sec 319 MBytes 44.6 Mbits/sec
> >
> > # iwconfig mlan0
> > mlan0 IEEE 802.11abgn ESSID:"Pxx-xxx"
> > Mode:Managed Frequency:2.437 GHz Access Point:
> > BC:Dx:xx:xx:xx:xx
> > Bit Rate=135 Mb/s
> > Retry long limit:7 RTS thr:off Fragment thr:off
> > Encryption key:off
> > Power Management:on
> > Link Quality=70/70 Signal level=-28 dBm
> > Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
> > Tx excessive retries:0 Invalid misc:0 Missed beacon:0
> >
> > Regards,
> >
> > john
> >
> >
> >
> > On Wed, Oct 9, 2013 at 12:23 AM, Jackey Shen <jackey.shen.bo at gmail.com>
> > wrote:
> >> Hi John,
> >>
> >> Does wifi module (Marvel SD8797) work fine on your board? What speed does
> >> it
> >> run at? SDR104?
> >>
> >> Thanks,
> >> Jackey
> >>
> >> On Wed, Oct 9, 2013 at 10:00 AM, John Tobias <john.tobias.ph at gmail.com>
> >> wrote:
> >>>
> >>> Hello,
> >>>
> >>> I am using git://gitorious.org/thierryreding/linux-next.git to boot my
> >>> custom board based on iMX6 sololite. My board has SanDisk iNAND 4.51
> >>> I/F and wifi module (Marvel SD8797). The latest update of
> >>> sdhci-esdhc-imx.c supports DDR50/SDR50/SDR104 and I would like to use
> >>> it for my device.
> >>>
> >>> In my .dts file, I have the following settings:
> >>>
> >>> /* WIFI module */
> >>> &usdhc2 {
> >>> pinctrl-names = "default", "state_100mhz", "state_200mhz";
> >>> pinctrl-0 = <&pinctrl_usdhc2_2_default>;
> >>> pinctrl-1 = <&pinctrl_usdhc2_3_100mhz>;
> >>> pinctrl-2 = <&pinctrl_usdhc2_4_200mhz>;
> >>> bus-width = <4>;
> >>> status = "okay";
> >>> };
> >>>
> >>> /* eMMC module */
> >>> &usdhc4 {
> >>> pinctrl-names = "default", "state_100mhz", "state_200mhz";
> >>> pinctrl-0 = <&pinctrl_usdhc4_2_default>;
> >>> pinctrl-1 = <&pinctrl_usdhc4_3_100mhz>;
> >>> pinctrl-2 = <&pinctrl_usdhc4_4_200mhz>;
> >>> bus-width = <8>;
> >>> status = "okay";
> >>> compatible = "fsl,imx6sl-usdhc", "fsl,imx6q-usdhc";
> >>> reg = <0x0219c000 0x4000>;
> >>> };
> >>>
> >>> Then, in my .dtsi file:
> >>>
> >>> usdhc2 {
> >>> /*WIFI pinmux */
> >>> pinctrl_usdhc2_2_default: default {
> >>> fsl,pins = <
> >>> EVT1_PAD_SD2_CMD__SD2_CMD 0x17039
> >>> EVT1_PAD_SD2_CLK__SD2_CLK 0x17039
> >>> EVT1_PAD_SD2_DATA0__SD2_DATA0 0x17039
> >>> EVT1_PAD_SD2_DATA1__SD2_DATA1 0x17039
> >>> EVT1_PAD_SD2_DATA2__SD2_DATA2 0x17039
> >>> EVT1_PAD_SD2_DATA3__SD2_DATA3 0x17039
> >>> >;
> >>> };
> >>>
> >>> pinctrl_usdhc2_3_100mhz: state_100mhz { /* 100Mhz */
> >>> fsl,pins = <
> >>> EVT1_PAD_SD2_CMD__SD2_CMD 0x170B9
> >>> EVT1_PAD_SD2_CLK__SD2_CLK 0x100B9
> >>> EVT1_PAD_SD2_DATA0__SD2_DATA0 0x170B9
> >>> EVT1_PAD_SD2_DATA1__SD2_DATA1 0x170B9
> >>> EVT1_PAD_SD2_DATA2__SD2_DATA2 0x170B9
> >>> EVT1_PAD_SD2_DATA3__SD2_DATA3 0x170B9
> >>> >;
> >>> };
> >>>
> >>> pinctrl_usdhc2_4_200mhz: state_200mhz { /* 200Mhz */
> >>> fsl,pins = <
> >>> EVT1_PAD_SD2_CMD__SD2_CMD 0x170F9
> >>> EVT1_PAD_SD2_CLK__SD2_CLK 0x100F9
> >>> EVT1_PAD_SD2_DATA0__SD2_DATA0 0x170F9
> >>> EVT1_PAD_SD2_DATA1__SD2_DATA1 0x170F9
> >>> EVT1_PAD_SD2_DATA2__SD2_DATA2 0x170F9
> >>> EVT1_PAD_SD2_DATA3__SD2_DATA3 0x170F9
> >>> >;
> >>> };
> >>> };
> >>>
> >>> usdhc4 {
> >>> /* eMMC pinmux */
> >>> pinctrl_usdhc4_2_default: default {
> >>> fsl,pins = <
> >>> EVT1_PAD_EPDC_BDR1__SD4_CMD 0x17039
> >>> EVT1_PAD_EPDC_BDR0__SD4_CLK 0x10039
> >>> EVT1_PAD_EPDC_PWR_COM__SD4_DATA0 0x17039
> >>> EVT1_PAD_EPDC_PWR_IRQ__SD4_DATA1 0x17039
> >>> EVT1_PAD_EPDC_PWR_STAT__SD4_DATA2 0x17039
> >>> EVT1_PAD_EPDC_PWR_WAKE__SD4_DATA3 0x17039
> >>> EVT1_PAD_FEC_MDC__SD4_DATA4 0x17039
> >>> EVT1_PAD_FEC_RX_DATA0__SD4_DATA5 0x17039
> >>> EVT1_PAD_FEC_TX_EN__SD4_DATA6 0x17039
> >>> EVT1_PAD_FEC_TX_DATA1__SD4_DATA7 0x17039
> >>> >;
> >>> };
> >>>
> >>> pinctrl_usdhc4_3_100mhz: state_100mhz { /* 100Mhz */
> >>> fsl,pins = <
> >>> EVT1_PAD_EPDC_BDR1__SD4_CMD 0x170B9
> >>> EVT1_PAD_EPDC_BDR0__SD4_CLK 0x100B9
> >>> EVT1_PAD_EPDC_PWR_COM__SD4_DATA0 0x170B9
> >>> EVT1_PAD_EPDC_PWR_IRQ__SD4_DATA1 0x170B9
> >>> EVT1_PAD_EPDC_PWR_STAT__SD4_DATA2 0x170B9
> >>> EVT1_PAD_EPDC_PWR_WAKE__SD4_DATA3 0x170B9
> >>> EVT1_PAD_FEC_MDC__SD4_DATA4 0x170B9
> >>> EVT1_PAD_FEC_RX_DATA0__SD4_DATA5 0x170B9
> >>> EVT1_PAD_FEC_TX_EN__SD4_DATA6 0x170B9
> >>> EVT1_PAD_FEC_TX_DATA1__SD4_DATA7 0x170B9
> >>> >;
> >>> };
> >>>
> >>> pinctrl_usdhc4_4_200mhz: state_200mhz { /* 200Mhz */
> >>> fsl,pins = <
> >>> EVT1_PAD_EPDC_BDR1__SD4_CMD 0x170F9
> >>> EVT1_PAD_EPDC_BDR0__SD4_CLK 0x100F9
> >>> EVT1_PAD_EPDC_PWR_COM__SD4_DATA0 0x170F9
> >>> EVT1_PAD_EPDC_PWR_IRQ__SD4_DATA1 0x170F9
> >>> EVT1_PAD_EPDC_PWR_STAT__SD4_DATA2 0x170F9
> >>> EVT1_PAD_EPDC_PWR_WAKE__SD4_DATA3 0x170F9
> >>> EVT1_PAD_FEC_MDC__SD4_DATA4 0x170F9
> >>> EVT1_PAD_FEC_RX_DATA0__SD4_DATA5 0x170F9
> >>> EVT1_PAD_FEC_TX_EN__SD4_DATA6 0x170F9
> >>> EVT1_PAD_FEC_TX_DATA1__SD4_DATA7 0x170F9
> >>> >;
> >>> };
> >>> };
> >>>
> >>>
> >>> 1. After using the said pinmux settings, the sdhci-esdh-imx controller
> >>> wasn't able to configure it correctly due the the group name for the
> >>> two port were the same (default, state_100mhz, state_200mhz).
> >>>
> >>> 2. Then, I temporarily disabled usdhc4 to test if the driver able to
> >>> enable the SDR50 for my wifi. Then, I was getting the following
> >>> errors:
> >>>
> >>> [ 1.655024] mmc0: error -110 whilst initialising SDIO card
> >>> [ 3.746340] mmc0: error -110 whilst initialising SDIO card
> >>> [ 3.818624] mmc0: host doesn't support card's voltages
> >>> [ 3.823783] mmc0: error -22 whilst initialising SDIO card
> >>> [ 3.901670] mmc0: host doesn't support card's voltages
> >>> [ 3.906862] mmc0: error -22 whilst initialising SDIO card
> >>> [ 34.307777] mmc0: host doesn't support card's voltages
> >>> [ 34.312980] mmc0: error -22 whilst initialising SDIO card
> >>>
> >>> 3. Then, I tried the eMMC to see if the driver able to enable the
> >>> DDR50. After booting it, the kernel detect the eMMC only in hight
> >>> speed mode.
> >>>
> >>>
> >>> I would like to know if anyone here can help me to figure out how to
> >>> enable the DDR50 for my eMMC and SDR50 for my wifi as well.
> >>>
> >>> Regards,
> >>>
> >>> john
> >>> --
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> >>> More majordomo info at http://vger.kernel.org/majordomo-info.html
> >>
> >>
>
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