[PATCH v2] ARM: shmobile: r8a7790 CCI configuration
Sudeep Holla
sudeep.holla at arm.com
Tue Nov 25 02:04:42 PST 2014
On 25/11/14 08:25, Gaku Inami wrote:
> Add the settings of CCI-400 for enabling ca15/ca7 snoop on r8a7790.
> Needed to configure the CCI boot cluster port regardless of MCPM.
>
> Signed-off-by: Gaku Inami <gaku.inami.xw at bp.renesas.com>
> Signed-off-by: Magnus Damm <damm at opensource.se>
> Signed-off-by: Simon Horman <horms+renesas at verge.net.au>
> ---
>
> Changes since version 1:
> - Fix a way to wait for the register read.
>
> arch/arm/mach-shmobile/smp-r8a7790.c | 19 +++++++++++++++++++
> 1 file changed, 19 insertions(+)
>
> diff --git a/arch/arm/mach-shmobile/smp-r8a7790.c b/arch/arm/mach-shmobile/smp-r8a7790.c
> index 9c3da13..b65d908 100644
> --- a/arch/arm/mach-shmobile/smp-r8a7790.c
> +++ b/arch/arm/mach-shmobile/smp-r8a7790.c
> @@ -25,6 +25,12 @@
> #include "pm-rcar.h"
> #include "r8a7790.h"
>
> +#define CCI_BASE 0xf0090000
> +#define CCI_SLAVE3 0x4000
> +#define CCI_SLAVE4 0x5000
> +#define CCI_SNOOP 0x0000
> +#define CCI_STATUS 0x000c
> +
I have asked the same question multiple times in the past, why are you
not using the DT bindings and the CCI driver for this ? Why are you
duplicating the code ? Any limitations to use them ?
Regards,
Sudeep
More information about the linux-arm-kernel
mailing list