Re: [PATCH] mmc: sdhci-esdhc-imx: support eMMC DDR mode when running at 3.3V

2018-07-02 Thread Ulf Hansson
On 28 June 2018 at 09:31, Stefan Agner wrote: > The uSDHC supports DDR modes for eMMC devices running at 3.3V. This > allows to run eMMC with 3.3V signaling voltage at DDR52 mode: > > # cat /sys/kernel/debug/mmc1/ios > clock: 5200 Hz > vdd:21 (3.3 ~ 3.4 V) > bus mo

[PATCH] mmc: sdhci-esdhc-imx: support eMMC DDR mode when running at 3.3V

2018-06-28 Thread Stefan Agner
The uSDHC supports DDR modes for eMMC devices running at 3.3V. This allows to run eMMC with 3.3V signaling voltage at DDR52 mode: # cat /sys/kernel/debug/mmc1/ios clock: 5200 Hz vdd:21 (3.3 ~ 3.4 V) bus mode: 2 (push-pull) chip select:0 (don't care) p