[U-Boot] [PATCH v7 2/2] DW SPI: Get clock value from Device Tree

[Marek Vasut]

On 12/26/2017 02:44 PM, Eugeniy Paltsev wrote:
> Add option to set spi controller clock frequency via device tree
> using standard clock bindings.
> 
> Define dw_spi_get_clk function as 'weak' as some targets
> (like SOCFPGA_GEN5 and SOCFPGA_ARRIA10) fon't use standard clock API
> and implement dw_spi_get_clk their own way in their clock manager.
> 
> Get rid of clock_manager.h include as we don't use
> cm_get_spi_controller_clk_hz function anymore. (we use redefined
> dw_spi_get_clk in SOCFPGA clock managers instead)
> 
> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev at synopsys.com>
> ---
>  drivers/spi/designware_spi.c | 45 ++++++++++++++++++++++++++++++++++++++++++--
>  1 file changed, 43 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/spi/designware_spi.c b/drivers/spi/designware_spi.c
> index 5aa507b..9883841 100644
> --- a/drivers/spi/designware_spi.c
> +++ b/drivers/spi/designware_spi.c
> @@ -11,6 +11,7 @@
>   */
>  
>  #include <common.h>
> +#include <clk.h>
>  #include <dm.h>
>  #include <errno.h>
>  #include <malloc.h>
> @@ -18,7 +19,6 @@
>  #include <fdtdec.h>
>  #include <linux/compat.h>
>  #include <asm/io.h>
> -#include <asm/arch/clock_manager.h>
>  
>  DECLARE_GLOBAL_DATA_PTR;
>  
> @@ -94,6 +94,8 @@ struct dw_spi_priv {
>  	void __iomem *regs;
>  	unsigned int freq;		/* Default frequency */
>  	unsigned int mode;
> +	struct clk clk;
> +	unsigned long bus_clk_rate;
>  
>  	int bits_per_word;
>  	u8 cs;			/* chip select pin */
> @@ -176,14 +178,53 @@ static void spi_hw_init(struct dw_spi_priv *priv)
>  	debug("%s: fifo_len=%d\n", __func__, priv->fifo_len);
>  }
>  
> +/*
> + * We define dw_spi_get_clk function as 'weak' as some targets
> + * (like SOCFPGA_GEN5 and SOCFPGA_ARRIA10) fon't use standard clock API
                                              ^^^
                                               '--- don't
Besides that

Reviewed-by: Marek Vasut <marex at denx.de>

this should be applied after 2018.01 is out.

-- 
Best regards,
Marek Vasut