[PATCH v1] spi: spi-aspeed-smc: convert devfdt_get_addr_index output to phys_addr_t

[Michael Nazzareno Trimarchi]

Hi Johan

On Sat, Feb 25, 2023 at 10:53 AM Michael Nazzareno Trimarchi
<michael at amarulasolutions.com> wrote:
>
> Hi Johan
>
> On Sat, Feb 25, 2023 at 10:50 AM Johan Jonker <jbx6244 at gmail.com> wrote:
> >
> >
> >
> > On 2/25/23 10:26, Michael Nazzareno Trimarchi wrote:
> > > Hi Johan
> > >
> > > On Thu, Feb 23, 2023 at 3:06 PM Johan Jonker <jbx6244 at gmail.com> wrote:
> > >>
> > >> The fdt_addr_t and phys_addr_t size have been decoupled.
> > >> A 32bit CPU can expect 64-bit data from the device tree parser,
> > >> so convert devfdt_get_addr_index output to phys_addr_t in the
> > >> spi-aspeed-smc.c file. Also fix dev_dbg to be able to handle
> > >> both sizes.
> > >>
> > >> Signed-off-by: Johan Jonker <jbx6244 at gmail.com>
> > >> ---
> > >>
> > >> Note:
> > >>
> > >> This is needed for a Rockchip patch serie to pass the test and
> > >> must be merged before by Rockchip maintainers:
> > >>
> > >> [PATCH v4 00/11] Fixes for Rockchip NFC driver part 1
> > >> https://lore.kernel.org/u-boot/f3dba231-4a55-0a94-dfab-5cab1419d132@gmail.com/
> > >>
> > >> Request for hardware test by Aspeed people.
> > >> ---
> > >>  drivers/spi/spi-aspeed-smc.c | 8 ++++----
> > >>  1 file changed, 4 insertions(+), 4 deletions(-)
> > >>
> > >> diff --git a/drivers/spi/spi-aspeed-smc.c b/drivers/spi/spi-aspeed-smc.c
> > >> index a3c96333..17696441 100644
> > >> --- a/drivers/spi/spi-aspeed-smc.c
> > >> +++ b/drivers/spi/spi-aspeed-smc.c
> > >> @@ -1125,14 +1125,14 @@ static int apseed_spi_of_to_plat(struct udevice *bus)
> > >>         int ret;
> > >>         struct clk hclk;
> > >>
> > >> -       priv->regs = (void __iomem *)devfdt_get_addr_index(bus, 0);
> > >> +       priv->regs = (void __iomem *)((phys_addr_t)devfdt_get_addr_index(bus, 0));
> > >
> >
> > > devfdt_get_addr_index_ptr is not the right way?
> >
> > That may work.
> >
> > >
> > >>         if ((u32)priv->regs == FDT_ADDR_T_NONE) {
> > >>                 dev_err(bus, "wrong ctrl base\n");
> > >>                 return -ENODEV;
> > >>         }
> > >>
> > >>         plat->ahb_base =
> > >> -               (void __iomem *)devfdt_get_addr_size_index(bus, 1, &plat->ahb_sz);
> > >> +               (void __iomem *)((phys_addr_t)devfdt_get_addr_size_index(bus, 1, &plat->ahb_sz));
> > >
> >
> > > devfdt_get_addr_index_ptr, same here
> >
> > fdt_addr_t devfdt_get_addr_size_index(const struct udevice *dev, int index,
> >                                       fdt_size_t *size)
> > vs
> >
> > void *devfdt_get_addr_index_ptr(const struct udevice *dev, int index)
> >
> > ===
> >
> > devfdt_get_addr_index_ptr does not offer the ahb_sz size.
> >
> > https://elixir.bootlin.com/u-boot/latest/source/drivers/core/fdtaddr.c#L112
> >
> > This function is used for that in devfdt_get_addr_size_index:
> >
> > fdtdec_get_addr_size_auto_noparent(gd->fdt_blob, dev_of_offset(dev),
> >                                            "reg", index, size, false);
> >
> > What would you suggest? Keep the cast or use fdtdec_get_addr_size_auto_noparent ?
> >
> > I'm a little bit "reluctant" to poke in code that I don't have hardware for.
> >
>
> Something like this
>
> diff --git a/drivers/core/fdtaddr.c b/drivers/core/fdtaddr.c
> index 91bcd1a2c2..d18749c3fd 100644
> --- a/drivers/core/fdtaddr.c
> +++ b/drivers/core/fdtaddr.c
> @@ -122,6 +122,14 @@ fdt_addr_t devfdt_get_addr_size_index(const
> struct udevice *dev, int index,
>  #endif
>  }
>
> +void *devfdt_get_addr_size_index_ptr(const struct udevice *dev, int index,
> +                                     fdt_size_t *size)
> +{
> +       fdt_addr_t addr = devfdt_get_addr_size_index(dev, index, size);
> +
> +       return (addr == FDT_ADDR_T_NONE) ? NULL : (void *)(uintptr_t)addr;
> +}
> +
>
> Michael
>

Is this ok? if so you can repost with changes

Michael
>
> > Johan
> >
> > >
> > >>         if ((u32)plat->ahb_base == FDT_ADDR_T_NONE) {
> > >>                 dev_err(bus, "wrong AHB base\n");
> > >>                 return -ENODEV;
> > >> @@ -1151,8 +1151,8 @@ static int apseed_spi_of_to_plat(struct udevice *bus)
> > >>         plat->hclk_rate = clk_get_rate(&hclk);
> > >>         clk_free(&hclk);
> > >>
> > >> -       dev_dbg(bus, "ctrl_base = 0x%x, ahb_base = 0x%p, size = 0x%lx\n",
> > >> -               (u32)priv->regs, plat->ahb_base, plat->ahb_sz);
> > >> +       dev_dbg(bus, "ctrl_base = 0x%x, ahb_base = 0x%p, size = 0x%llx\n",
> > >> +               (u32)priv->regs, plat->ahb_base, (fdt64_t)plat->ahb_sz);
> > >>         dev_dbg(bus, "hclk = %dMHz, max_cs = %d\n",
> > >>                 plat->hclk_rate / 1000000, plat->max_cs);
> > >>
> > >> --
> > >
> > > Michael
> > >
> > >> 2.20.1
> > >>
> > >
> > >
>
>
>
> --
> Michael Nazzareno Trimarchi
> Co-Founder & Chief Executive Officer
> M. +39 347 913 2170
> michael at amarulasolutions.com
> __________________________________
>
> Amarula Solutions BV
> Joop Geesinkweg 125, 1114 AB, Amsterdam, NL
> T. +31 (0)85 111 9172
> info at amarulasolutions.com
> www.amarulasolutions.com



-- 
Michael Nazzareno Trimarchi
Co-Founder & Chief Executive Officer
M. +39 347 913 2170
michael at amarulasolutions.com
__________________________________

Amarula Solutions BV
Joop Geesinkweg 125, 1114 AB, Amsterdam, NL
T. +31 (0)85 111 9172
info at amarulasolutions.com
www.amarulasolutions.com