MMC: HS200/HS400 1.8v modes do not work

[kunsong]

We wants to use eMMC with HS200/HS400 1.8v modes.  Try to checking with eMMC to MMC converter to SD/MMC slot on LS1043A-RDB.

but HS200/HS400 1.8v modes do not work.

diff --git a/arch/arm/dts/fsl-ls1043a.dtsi b/arch/arm/dts/fsl-ls1043a.dtsi
index ff401222ff..a804f5123c 100644
--- a/arch/arm/dts/fsl-ls1043a.dtsi
+++ b/arch/arm/dts/fsl-ls1043a.dtsi
@@ -70,6 +70,14 @@
                        status = "disabled";
                };

+               esdhc: esdhc@1560000 {
+                       compatible = "fsl,esdhc";
+                       reg = <0x0 0x1560000 0x0 0x10000>;
+                       interrupts = <0 62 0x4>;
+                       big-endian;
+                       bus-width = <4>;
+               };
+

index 1c40ffb4c1e8..9b702defc72a 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls1043a-rdb.dts
+++ b/arch/arm64/boot/dts/freescale/fsl-ls1043a-rdb.dts
@@ -26,6 +26,14 @@
        };
 };

+&esdhc {
+        mmc-hs200-1_8v;
+        sd-uhs-sdr104;
+        sd-uhs-sdr50;
+        sd-uhs-sdr25;
+        sd-uhs-sdr12;
+};
+
 &i2c0 {
        status = "okay";
        ina220@40 {
diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi
index 3366f316c8a2..e6fec016b619 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi
@@ -320,7 +320,7 @@
                        voltage-ranges = <1800 1800 3300 3300>;
                        sdhci,auto-cmd12;
                        big-endian;
-                       bus-width = <4>;
+                       bus-width = <8>;
                };

root@nxp-ls1043:~# cat /sys/kernel/debug/mmc0/ios
clock:          0 Hz
vdd:            0 (invalid)
bus mode:       2 (push-pull)
chip select:    0 (don't care)
power mode:     0 (off)
bus width:      0 (1 bits)
timing spec:    0 (legacy)
signal voltage: 0 (3.30 V)
driver type:    0 (driver type B)

git log -p 4c6913d1d9f1f487226e06916bc5c5c38d3812d6
commit 4c6913d1d9f1f487226e06916bc5c5c38d3812d6
Author: Yangbo Lu <yangbo.lu@nxp.com>
Date:   Tue Mar 3 10:20:18 2020 +0800

    configs: disable eMMC HS200 support on layerscape platforms

for uboot, I found  disable eMMC HS200 funcitons.

refer https://community.nxp.com/t5/i-MX-Processors/eMMC-configuration-to-operate-in-HS200-mode/m-p/860609#...

It involving uboot modification.

I want to know , whether support HS200 1.8v for LS1043A-RDB

[kunsong]

[2023-07-05 15:00:29.827] [ 37.399655] mmc0: Timeout waiting for hardware cmd interrupt.
[2023-07-05 15:00:29.983] [ 37.405390] mmc0: sdhci: ============ SDHCI REGISTER DUMP ===========
[2023-07-05 15:00:29.983] [ 37.411819] mmc0: sdhci: Sys addr: 0x00000000 | Version: 0x00002102
[2023-07-05 15:00:29.983] [ 37.418248] mmc0: sdhci: Blk size: 0x00000000 | Blk cnt: 0x00000000
[2023-07-05 15:00:29.983] [ 37.424677] mmc0: sdhci: Argument: 0x00000000 | Trn mode: 0x00000000
[2023-07-05 15:00:29.983] [ 37.431105] mmc0: sdhci: Present: 0x01fd0009 | Host ctl: 0x00000020
[2023-07-05 15:00:29.983] [ 37.437534] mmc0: sdhci: Power: 0x00000000 | Blk gap: 0x00000000
[2023-07-05 15:00:29.983] [ 37.443963] mmc0: sdhci: Wake-up: 0x00000000 | Clock: 0x000020f8
[2023-07-05 15:00:29.983] [ 37.450391] mmc0: sdhci: Timeout: 0x00000000 | Int stat: 0x00000000
[2023-07-05 15:00:29.983] [ 37.456819] mmc0: sdhci: Int enab: 0x007f1087 | Sig enab: 0x007f1083
[2023-07-05 15:00:29.983] [ 37.463249] mmc0: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00002102
[2023-07-05 15:00:29.983] [ 37.469677] mmc0: sdhci: Caps: 0x37fa0000 | Caps_1: 0x0000af00
[2023-07-05 15:00:29.983] [ 37.476105] mmc0: sdhci: Cmd: 0x00000000 | Max curr: 0x00000000
[2023-07-05 15:00:29.983] [ 37.482533] mmc0: sdhci: Resp[0]: 0x00000000 | Resp[1]: 0x00000000
[2023-07-05 15:00:29.983] [ 37.488962] mmc0: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
[2023-07-05 15:00:29.983] [ 37.495390] mmc0: sdhci: Host ctl2: 0x00000000
[2023-07-05 15:00:29.983] [ 37.499823] mmc0: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x0000000000000000

[mrudangshelat-13]

Hi @kunsong,

Ensure the EVDD voltage must be 1.8V as you are using HS200 1.8 mode.

Regards,
Mrudang

[mrudangshelat-13]

Hi @kunsong,

The LS1043A supports HS200 mode which is eMMC mode. But the LS1043ARDB only have a SD card slot.

Regards,
Mrudang

[kunsong]

https://patchwork.kernel.org/project/linux-arm-kernel/patch/1493894940-47452-3-git-send-email-yangbo...
arm64: dts: ls1046a: support SD UHS-I and eMMC HS200 on RDB
I check the kernel code and only see support for lsa1046

We try add below code to fsl-ls1043a-rdb.dts, but not in effect.
Can you tell me the relationship between the ios file and dts, why the clock in the ios file is 0 and the voltage is 0 after we modified it
/sys/kernel/debug/mmc0/ios
+&esdhc {
+ mmc-hs200-1_8v;
+ sd-uhs-sdr104;
+ sd-uhs-sdr50;
+ sd-uhs-sdr25;
+ sd-uhs-sdr12;
+};
+

Thanks!

[kunsong]

Check uboot mmc info
=> mmc info
Device: FSL_SDHC
Manufacturer ID: 3
OEM: 5344
Name: SC16G
Bus Speed: 50000000
Mode: SD High Speed (50MHz)
Rd Block Len: 512
SD version 3.0
High Capacity: Yes
Capacity: 14.8 GiB
Bus Width: 4-bit
Erase Group Size: 512 Bytes