On Tue, Aug 17, 2021 at 04:36:43AM +0300, Dmitry Osipenko wrote:
[...]
> diff --git a/block/partitions/tegra.c b/block/partitions/tegra.c
> new file mode 100644
> index 000000000000..4937e9f62398
> --- /dev/null
> +++ b/block/partitions/tegra.c
> @@ -0,0 +1,75 @@
> +// SPDX-License-Identifier: GPL-2.0
> +
> +#define pr_fmt(fmt) "tegra-partition: " fmt
> +
> +#include <linux/blkdev.h>
> +#include <linux/kernel.h>
> +#include <linux/of.h>
> +#include <linux/sizes.h>
> +
> +#include <linux/mmc/blkdev.h>
> +#include <linux/mmc/card.h>
> +#include <linux/mmc/host.h>
> +
> +#include <soc/tegra/common.h>
> +
> +#include "check.h"
> +
> +static const struct of_device_id tegra_sdhci_match[] = {
> +	{ .compatible = "nvidia,tegra20-sdhci", },
> +	{ .compatible = "nvidia,tegra30-sdhci", },
> +	{ .compatible = "nvidia,tegra114-sdhci", },

I know of a couple of OEM devices using the above SoCs that support this
alternate GPT sector mechanism...

> +	{ .compatible = "nvidia,tegra124-sdhci", },

... but I'm unaware of any using this. The only one that I could imagine
employing this quirk is the SHIELD Tablet K1 (a.k.a. ST8), but I thought
it had been changed on that device already. Do you know specifics?

Thierry