[PATCH 04/10] ram: thead: Add initial DDR controller support for TH1520

[Yao Zi]

On Sat, Apr 26, 2025 at 04:56:58PM +0000, Yao Zi wrote:
> This patch cleans the vendor code of DDR initialization up, converts the
> driver to fit in DM framework and use a firmware[1] packaged by binman to
> ship PHY configuration.
> 
> Currently the driver is only capable of initializing the controller to
> work with dual-rank 3733MHz LPDDR4, which is shipped by 16GiB variants
> of LicheePi 4A boards and I could test with. Support for other
> configurations could be easily added later.

I wrongly repeated this patch twice when sending the series, sorry for
the noise.

> Link: https://github.com/ziyao233/th1520-firmware # [1]
> Signed-off-by: Yao Zi <ziyao at disroot.org>
> ---
>  drivers/ram/Kconfig            |   1 +
>  drivers/ram/Makefile           |   4 +
>  drivers/ram/thead/Kconfig      |   5 +
>  drivers/ram/thead/Makefile     |   1 +
>  drivers/ram/thead/th1520_ddr.c | 781 +++++++++++++++++++++++++++++++++
>  5 files changed, 792 insertions(+)
>  create mode 100644 drivers/ram/thead/Kconfig
>  create mode 100644 drivers/ram/thead/Makefile
>  create mode 100644 drivers/ram/thead/th1520_ddr.c

...

> diff --git a/drivers/ram/thead/th1520_ddr.c b/drivers/ram/thead/th1520_ddr.c
> new file mode 100644
> index 00000000000..ff9860b9c3d
> --- /dev/null
> +++ b/drivers/ram/thead/th1520_ddr.c
> @@ -0,0 +1,781 @@
> +#include <binman.h>
> +#include <binman_sym.h>
> +#include <dm.h>
> +#include <init.h>
> +#include <linux/bitfield.h>
> +#include <linux/iopoll.h>
> +#include <ram.h>

And here is missing an SPDX license header and a copyright notice. I'll
add them in v2.

Thanks,
Yao Zi