[PATCH v2 0/3] Add power domain range for MU13 side b / IRQSTR_DSP

[PATCH v2 0/3] Add power domain range for MU13 side b / IRQSTR_DSP

[Daniel Baluta]

This patch adds power domain range for MU13 side b and irqsteer in
preparation for adding support for DSP <-> AP IPC communication.

Changes since v1:
	- fixed typo in patch 1/3 commit message
	- enhance commit message for patch 2/3 as per Aisheng's comments
	- only add PD range for mu 13 side B
	
Daniel Baluta (3):
  firmware: imx: scu-pd: Rename mu PD range to mu_a
  firmware: imx: scu-pd: Add mu13 b side PD range
  firmware: imx: scu-pd: Add IRQSTR_DSP PD range

 drivers/firmware/imx/scu-pd.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

-- 
2.17.1


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[PATCH v2 1/3] firmware: imx: scu-pd: Rename mu PD range to mu_a

[Daniel Baluta]

The Messaging Unit module enables two processors within the SoC to
communicate and coordinate by passing messages through the MU interface.

MUs have 2 “sides” with independent programming interfaces. Rename
mu PD range to mu_a because it's actually side A of MUs.

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
---
 drivers/firmware/imx/scu-pd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/firmware/imx/scu-pd.c b/drivers/firmware/imx/scu-pd.c
index 480cec69e2c9..950d30238186 100644
--- a/drivers/firmware/imx/scu-pd.c
+++ b/drivers/firmware/imx/scu-pd.c
@@ -92,7 +92,7 @@ static const struct imx_sc_pd_range imx8qxp_scu_pd_ranges[] = {
 	{ "gpt", IMX_SC_R_GPT_0, 5, true, 0 },
 	{ "kpp", IMX_SC_R_KPP, 1, false, 0 },
 	{ "fspi", IMX_SC_R_FSPI_0, 2, true, 0 },
-	{ "mu", IMX_SC_R_MU_0A, 14, true, 0 },
+	{ "mu_a", IMX_SC_R_MU_0A, 14, true, 0 },
 
 	/* CONN SS */
 	{ "usb", IMX_SC_R_USB_0, 2, true, 0 },
-- 
2.17.1


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

[Daniel Baluta]

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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[PATCH v2 3/3] firmware: imx: scu-pd: Add IRQSTR_DSP PD range

[Daniel Baluta]

The DSP interrupt steer gathers interrupts from the system
and can be used to steer them to DSP.

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@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 eb9700b66a76..b556612207e5 100644
--- a/drivers/firmware/imx/scu-pd.c
+++ b/drivers/firmware/imx/scu-pd.c
@@ -131,6 +131,7 @@ static const struct imx_sc_pd_range imx8qxp_scu_pd_ranges[] = {
 	{ "lcd0-pwm", IMX_SC_R_LCD_0_PWM_0, 1, true, 0 },
 	{ "lpuart", IMX_SC_R_UART_0, 4, true, 0 },
 	{ "lpspi", IMX_SC_R_SPI_0, 4, true, 0 },
+	{ "irqstr_dsp", IMX_SC_R_IRQSTR_DSP, 1, false, 0 },
 
 	/* VPU SS */
 	{ "vpu", IMX_SC_R_VPU, 1, false, 0 },
-- 
2.17.1


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

[Aisheng Dong]

> From: Daniel Baluta <daniel.baluta@nxp.com>
> Sent: Thursday, July 18, 2019 6:25 PM
> 
> 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>

Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>

Regards
Aisheng
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Re: [PATCH v2 0/3] Add power domain range for MU13 side b / IRQSTR_DSP

[Shawn Guo]

On Thu, Jul 18, 2019 at 01:25:16PM +0300, Daniel Baluta wrote:
> This patch adds power domain range for MU13 side b and irqsteer in
> preparation for adding support for DSP <-> AP IPC communication.
> 
> Changes since v1:
> 	- fixed typo in patch 1/3 commit message
> 	- enhance commit message for patch 2/3 as per Aisheng's comments
> 	- only add PD range for mu 13 side B
> 	
> Daniel Baluta (3):
>   firmware: imx: scu-pd: Rename mu PD range to mu_a
>   firmware: imx: scu-pd: Add mu13 b side PD range
>   firmware: imx: scu-pd: Add IRQSTR_DSP PD range

Applied all, thanks.

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