On 23. 7. 4. 18:32, Sascha Hauer wrote:
> The currently supported RK3399 has a stride of 20 between the channel
> specific registers. Upcoming RK3588 has a different stride, so put
> the stride into driver data to make it configurable.
> While at it convert decimal 20 to hex 0x14 for consistency with RK3588
> which has a register stride 0x4000 and we want to write that in hex
> as well.
>
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
> Reviewed-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
> Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
> ---
> drivers/devfreq/event/rockchip-dfi.c | 11 +++++++----
> 1 file changed, 7 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c
> index 969b62f071b83..85ec93fd41858 100644
> --- a/drivers/devfreq/event/rockchip-dfi.c
> +++ b/drivers/devfreq/event/rockchip-dfi.c
> @@ -112,6 +112,7 @@ struct rockchip_dfi {
> int active_events;
> int burst_len;
> int buswidth[DMC_MAX_CHANNELS];
> + int ddrmon_stride;
> };
>
> static int rockchip_dfi_enable(struct rockchip_dfi *dfi)
> @@ -189,13 +190,13 @@ static void rockchip_dfi_read_counters(struct rockchip_dfi *dfi, struct dmc_coun
> if (!(dfi->channel_mask & BIT(i)))
> continue;
> c->c[i].read_access = readl_relaxed(dfi_regs +
> - DDRMON_CH0_RD_NUM + i * 20);
> + DDRMON_CH0_RD_NUM + i * dfi->ddrmon_stride);
> c->c[i].write_access = readl_relaxed(dfi_regs +
> - DDRMON_CH0_WR_NUM + i * 20);
> + DDRMON_CH0_WR_NUM + i * dfi->ddrmon_stride);
> c->c[i].access = readl_relaxed(dfi_regs +
> - DDRMON_CH0_DFI_ACCESS_NUM + i * 20);
> + DDRMON_CH0_DFI_ACCESS_NUM + i * dfi->ddrmon_stride);
> c->c[i].clock_cycles = readl_relaxed(dfi_regs +
> - DDRMON_CH0_COUNT_NUM + i * 20);
> + DDRMON_CH0_COUNT_NUM + i * dfi->ddrmon_stride);
Before this path, rk3399 and rk3568 have used the same stride.
But, this patch add the ddrmon_stride for only rk3399.
It seems that the behavior of rk3568 is changed.
If ddrmon_stride is not required for rk3568,
you must move this patch before adding rk3568 support patch ("PM / devfreq: rockchip-dfi: Add RK3568 support").
> }
> }
>
> @@ -664,6 +665,8 @@ static int rk3399_dfi_init(struct rockchip_dfi *dfi)
> dfi->buswidth[0] = FIELD_GET(RK3399_PMUGRF_OS_REG2_BW_CH0, val) == 0 ? 4 : 2;
> dfi->buswidth[1] = FIELD_GET(RK3399_PMUGRF_OS_REG2_BW_CH1, val) == 0 ? 4 : 2;
>
> + dfi->ddrmon_stride = 0x14;
> +
> return 0;
> };
>
--
Best Regards,
Samsung Electronics
Chanwoo Choi
