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SubjectRe: [PATCH 3/6] i2c: i2c-qcom-geni: Add interconnect support
On Mon, Jan 21, 2019 at 10:34 PM Alok Chauhan <alokc@codeaurora.org> wrote:
>
> Get the interconnect paths for I2C based Serial Engine device
> and vote accordingly based on maximum supported I2C frequency.
>
> Signed-off-by: Alok Chauhan <alokc@codeaurora.org>
> ---
> drivers/i2c/busses/i2c-qcom-geni.c | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/drivers/i2c/busses/i2c-qcom-geni.c b/drivers/i2c/busses/i2c-qcom-geni.c
> index db075bc..e8fe63a 100644
> --- a/drivers/i2c/busses/i2c-qcom-geni.c
> +++ b/drivers/i2c/busses/i2c-qcom-geni.c
> @@ -14,6 +14,7 @@
> #include <linux/pm_runtime.h>
> #include <linux/qcom-geni-se.h>
> #include <linux/spinlock.h>
> +#include <linux/interconnect.h>
>
> #define SE_I2C_TX_TRANS_LEN 0x26c
> #define SE_I2C_RX_TRANS_LEN 0x270
> @@ -508,6 +509,15 @@ static int geni_i2c_probe(struct platform_device *pdev)
> return ret;
> }
>
> + /* Set the bus quota to a reasonable value */
> + gi2c->se.avg_bw = Bps_to_icc(1000);
> + gi2c->se.peak_bw = Bps_to_icc(76800000);

Can you compute a real bandwidth based on the i2c bus speed, rather
than some max vote?

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