Hi
On Thu, 18 Dec 2014, Lad, Prabhakar wrote:
> From: Benoit Parrot <bparrot@xxxxxx>
>
> this patch adds VPFE HWMOD data for AM43xx.
>
> Signed-off-by: Benoit Parrot <bparrot@xxxxxx>
> Signed-off-by: Darren Etheridge <detheridge@xxxxxx>
> Signed-off-by: Felipe Balbi <balbi@xxxxxx>
> Signed-off-by: Lad, Prabhakar <prabhakar.csengg@xxxxxxxxx>
...
> ---
> arch/arm/mach-omap2/omap_hwmod_43xx_data.c | 56 ++++++++++++++++++++++++++++++
> arch/arm/mach-omap2/prcm43xx.h | 3 +-
> 2 files changed, 58 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/mach-omap2/omap_hwmod_43xx_data.c b/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
> index fea01aa..bd9067e 100644
> --- a/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
> +++ b/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
...
> @@ -750,6 +788,22 @@ static struct omap_hwmod_ocp_if am43xx_l4_ls__dss_rfbi = {
> .user = OCP_USER_MPU | OCP_USER_SDMA,
> };
>
> +static struct omap_hwmod_ocp_if am43xx_l3__vpfe0 = {
> + .master = &am33xx_l3_main_hwmod,
> + .slave = &am43xx_vpfe0_hwmod,
> + .clk = "l3_gclk",
> + .flags = OCPIF_SWSUP_IDLE,
> + .user = OCP_USER_MPU,
> +};
> +
> +static struct omap_hwmod_ocp_if am43xx_l3__vpfe1 = {
> + .master = &am33xx_l3_main_hwmod,
> + .slave = &am43xx_vpfe1_hwmod,
> + .clk = "l3_gclk",
> + .flags = OCPIF_SWSUP_IDLE,
> + .user = OCP_USER_MPU,
> +};
> +
> static struct omap_hwmod_ocp_if *am43xx_hwmod_ocp_ifs[] __initdata = {
> &am33xx_l4_wkup__synctimer,
> &am43xx_l4_ls__timer8,
> @@ -848,6 +902,8 @@ static struct omap_hwmod_ocp_if *am43xx_hwmod_ocp_ifs[] __initdata = {
> &am43xx_l4_ls__dss,
> &am43xx_l4_ls__dss_dispc,
> &am43xx_l4_ls__dss_rfbi,
> + &am43xx_l3__vpfe0,
> + &am43xx_l3__vpfe1,
> NULL,
> };
According to SPRUHL7 Figure 14-1 "VPFE Integration" and Table 14-2 "VPFE
Connectivity Attributes", a VPFE has two interconnect ports per instance:
one L4-Per port as a register target, and one L3 port as a DMA initiator.
It's unclear to me whether the L3 port can also serve as a register
target, but Section 2.1 "ARM Cortex-A9 Memory Map", Table 4-1 "L3
Master-Slave Connectivity", and Figure 4-2 "L4 Topology" suggest that it
cannot.
So if that's correct, there should be two more struct omap_hwmod_ocp_if
records added in this patch for the register target ports that are
connected to the L4. DSS is a good example: see am43xx_dss__l3_main and
am43xx_l4_ls__dss in this same file.
- Paul
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