diff mbox series

spi: octeon_spi: Use a fixed 100MHz input clock on Octeon TX2

Message ID 20200805130730.871608-1-sr@denx.de
State New
Delegated to: Daniel Schwierzeck
Headers show
Series spi: octeon_spi: Use a fixed 100MHz input clock on Octeon TX2 | expand

Commit Message

Stefan Roese Aug. 5, 2020, 1:07 p.m. UTC
Octeon TX2 sets the TB100_EN bit in the config register. We need to use
a fixed 100MHz clock for this as well to work properly.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Aaron Williams <awilliams@marvell.com>
Cc: Suneel Garapati <sgarapati@marvell.com>
Cc: Chandrakala Chavva <cchavva@marvell.com>
Cc: Jagan Teki <jagan@amarulasolutions.com>
---
 drivers/spi/octeon_spi.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Comments

Stefan Roese Aug. 26, 2020, 10:03 a.m. UTC | #1
Hi Jagan,

On 05.08.20 15:07, Stefan Roese wrote:
> Octeon TX2 sets the TB100_EN bit in the config register. We need to use
> a fixed 100MHz clock for this as well to work properly.
> 
> Signed-off-by: Stefan Roese <sr@denx.de>
> Cc: Aaron Williams <awilliams@marvell.com>
> Cc: Suneel Garapati <sgarapati@marvell.com>
> Cc: Chandrakala Chavva <cchavva@marvell.com>
> Cc: Jagan Teki <jagan@amarulasolutions.com>
> ---
>   drivers/spi/octeon_spi.c | 5 ++++-
>   1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/spi/octeon_spi.c b/drivers/spi/octeon_spi.c
> index 83fe6330a1..7e88e5580f 100644
> --- a/drivers/spi/octeon_spi.c
> +++ b/drivers/spi/octeon_spi.c
> @@ -519,7 +519,10 @@ static int octeon_spi_set_speed(struct udevice *bus, uint max_hz)
>   	if (max_hz > OCTEON_SPI_MAX_CLOCK_HZ)
>   		max_hz = OCTEON_SPI_MAX_CLOCK_HZ;
>   
> -	clk_rate = clk_get_rate(&priv->clk);
> +	if (device_is_compatible(bus, "cavium,thunderx-spi"))
> +		clk_rate = 100000000;
> +	else
> +		clk_rate = clk_get_rate(&priv->clk);
>   	if (IS_ERR_VALUE(clk_rate))
>   		return -EINVAL;
>   

Any updates on this? Are you okay with this patch and plan to push
it upstream soon? Or should I pull it with your Acked-by?

Thanks,
Stefan
diff mbox series

Patch

diff --git a/drivers/spi/octeon_spi.c b/drivers/spi/octeon_spi.c
index 83fe6330a1..7e88e5580f 100644
--- a/drivers/spi/octeon_spi.c
+++ b/drivers/spi/octeon_spi.c
@@ -519,7 +519,10 @@  static int octeon_spi_set_speed(struct udevice *bus, uint max_hz)
 	if (max_hz > OCTEON_SPI_MAX_CLOCK_HZ)
 		max_hz = OCTEON_SPI_MAX_CLOCK_HZ;
 
-	clk_rate = clk_get_rate(&priv->clk);
+	if (device_is_compatible(bus, "cavium,thunderx-spi"))
+		clk_rate = 100000000;
+	else
+		clk_rate = clk_get_rate(&priv->clk);
 	if (IS_ERR_VALUE(clk_rate))
 		return -EINVAL;