linux-kernel - [PATCH v2 2/3] firmware: imx: scu-pd: Add mu13 b side PD range

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Message-Id: <20190718102519.31855-3-daniel.baluta@nxp.com>
Date:   Thu, 18 Jul 2019 13:25:18 +0300
From:   Daniel Baluta <daniel.baluta@....com>
To:     shawnguo@...nel.org
Cc:     s.hauer@...gutronix.de, =kernel@...gutronix.de, festevam@...il.com,
        linux-imx@....com, aisheng.dong@....com, ulf.hansson@...aro.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        shengjiu.wang@....com, paul.olaru@....com,
        Daniel Baluta <daniel.baluta@....com>
Subject: [PATCH v2 2/3] firmware: imx: scu-pd: Add mu13 b side PD range

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@....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