[PATCH v2 21/30] mmc: rockchip_sdhci: Add initial support for RK3528

[Kever Yang]

On 2025/4/8 06:46, Jonas Karlman wrote:
> Add initial support for SDHCI controller in RK3528.
>
> Only MMC Legacy and MMC High Speed (52MHz) mode is supported after this,
> more work is needed to get the faster HS200/HS400/HS400ES modes working.
>
> Variant tap and delay num is copied from vendor Linux tag
> linux-6.1-stan-rkr5.
>
> Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
Reviewed-by: Kever Yang <kever.yang at rock-chips.com>

Thanks,
- Kever
> ---
> v2: No change
> ---
>   drivers/mmc/rockchip_sdhci.c | 15 +++++++++++++++
>   1 file changed, 15 insertions(+)
>
> diff --git a/drivers/mmc/rockchip_sdhci.c b/drivers/mmc/rockchip_sdhci.c
> index 4968404bfaed..2c54b8a942da 100644
> --- a/drivers/mmc/rockchip_sdhci.c
> +++ b/drivers/mmc/rockchip_sdhci.c
> @@ -650,6 +650,17 @@ static const struct sdhci_data rk3399_data = {
>   	.set_enhanced_strobe = rk3399_sdhci_set_enhanced_strobe,
>   };
>   
> +static const struct sdhci_data rk3528_data = {
> +	.set_ios_post = rk3568_sdhci_set_ios_post,
> +	.set_clock = rk3568_sdhci_set_clock,
> +	.config_dll = rk3568_sdhci_config_dll,
> +	.hs200_txclk_tapnum = 0xc,
> +	.hs400_txclk_tapnum = 0x6,
> +	.hs400_cmdout_tapnum = 0x6,
> +	.hs400_strbin_tapnum = 0x3,
> +	.ddr50_strbin_delay_num = 0xa,
> +};
> +
>   static const struct sdhci_data rk3568_data = {
>   	.set_ios_post = rk3568_sdhci_set_ios_post,
>   	.set_clock = rk3568_sdhci_set_clock,
> @@ -678,6 +689,10 @@ static const struct udevice_id sdhci_ids[] = {
>   		.compatible = "arasan,sdhci-5.1",
>   		.data = (ulong)&rk3399_data,
>   	},
> +	{
> +		.compatible = "rockchip,rk3528-dwcmshc",
> +		.data = (ulong)&rk3528_data,
> +	},
>   	{
>   		.compatible = "rockchip,rk3568-dwcmshc",
>   		.data = (ulong)&rk3568_data,