Messages in this thread Patch in this message | | | From | Daniel Baluta <> | Subject | [PATCH v2 2/3] firmware: imx: scu-pd: Add mu13 b side PD range | Date | Thu, 18 Jul 2019 13:25:18 +0300 |
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LSIO subsystem contains 14 MU instances.
5 MUs to communicate between AP <-> SCU - side-A PD range managed by AP - side-B PD range managed by SCU
9 MUs to communicate between all cores (AP/M4/DSP). - side-A PD range managed by core-A (AP/M4/DSP) - side-B PD range managed by core-B (AP/M4/DSP).
Communication between AP <-> DSP is done through the assigned MU number 13.
So, we power up side-A by the AP and we decide to power up side-B also from AP. This is because powering it up from DSP would be painful.
Powering up side B from DSP would require the DSP to communicate with SCU and to keep things simple we don't want that now.
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com> --- drivers/firmware/imx/scu-pd.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/firmware/imx/scu-pd.c b/drivers/firmware/imx/scu-pd.c index 950d30238186..eb9700b66a76 100644 --- a/drivers/firmware/imx/scu-pd.c +++ b/drivers/firmware/imx/scu-pd.c @@ -93,6 +93,7 @@ static const struct imx_sc_pd_range imx8qxp_scu_pd_ranges[] = { { "kpp", IMX_SC_R_KPP, 1, false, 0 }, { "fspi", IMX_SC_R_FSPI_0, 2, true, 0 }, { "mu_a", IMX_SC_R_MU_0A, 14, true, 0 }, + { "mu_b", IMX_SC_R_MU_13B, 1, true, 13 }, /* CONN SS */ { "usb", IMX_SC_R_USB_0, 2, true, 0 }, -- 2.17.1
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