* [PATCH 1/2] dt-bindings: reset: thead,th1520-reset: add more VOSYS resets
2025-08-13 8:17 [PATCH 0/2] reset: th1520: add VOSYS resets for DPU/HDMI/DSI Icenowy Zheng
@ 2025-08-13 8:17 ` Icenowy Zheng
2025-08-13 17:00 ` Conor Dooley
2025-08-13 8:17 ` [PATCH 2/2] reset: th1520: add resets for display pipeline Icenowy Zheng
2025-08-14 10:55 ` [PATCH 0/2] reset: th1520: add VOSYS resets for DPU/HDMI/DSI Philipp Zabel
2 siblings, 1 reply; 6+ messages in thread
From: Icenowy Zheng @ 2025-08-13 8:17 UTC (permalink / raw)
To: Drew Fustini, Guo Ren, Fu Wei, Philipp Zabel, Rob Herring,
Krzysztof Kozlowski, Conor Dooley
Cc: Michal Wilczynski, Yao Zi, Han Gao, linux-riscv, devicetree,
linux-kernel, Icenowy Zheng
VOSYS contains more resets for a display pipeline, includes ones for the
display controller (called DPU in the manual), the HDMI controller and 2
MIPI DSI controllers.
Allocate IDs for these resets in the dt binding header file.
Now all peripheral related VOSYS reset controls are here, only the bus
matrix / IOPMP ones are missing, which shouldn't be messed with.
Signed-off-by: Icenowy Zheng <uwu@icenowy.me>
---
include/dt-bindings/reset/thead,th1520-reset.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/include/dt-bindings/reset/thead,th1520-reset.h b/include/dt-bindings/reset/thead,th1520-reset.h
index 00459f1604897..ee799286c1754 100644
--- a/include/dt-bindings/reset/thead,th1520-reset.h
+++ b/include/dt-bindings/reset/thead,th1520-reset.h
@@ -12,5 +12,12 @@
#define TH1520_RESET_ID_NPU 2
#define TH1520_RESET_ID_WDT0 3
#define TH1520_RESET_ID_WDT1 4
+#define TH1520_RESET_ID_DPU_AHB 5
+#define TH1520_RESET_ID_DPU_AXI 6
+#define TH1520_RESET_ID_DPU_CORE 7
+#define TH1520_RESET_ID_DSI0_APB 8
+#define TH1520_RESET_ID_DSI1_APB 9
+#define TH1520_RESET_ID_HDMI 10
+#define TH1520_RESET_ID_HDMI_APB 11
#endif /* _DT_BINDINGS_TH1520_RESET_H */
--
2.50.1
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^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH 2/2] reset: th1520: add resets for display pipeline
2025-08-13 8:17 [PATCH 0/2] reset: th1520: add VOSYS resets for DPU/HDMI/DSI Icenowy Zheng
2025-08-13 8:17 ` [PATCH 1/2] dt-bindings: reset: thead,th1520-reset: add more VOSYS resets Icenowy Zheng
@ 2025-08-13 8:17 ` Icenowy Zheng
2025-08-14 7:11 ` Philipp Zabel
2025-08-14 10:55 ` [PATCH 0/2] reset: th1520: add VOSYS resets for DPU/HDMI/DSI Philipp Zabel
2 siblings, 1 reply; 6+ messages in thread
From: Icenowy Zheng @ 2025-08-13 8:17 UTC (permalink / raw)
To: Drew Fustini, Guo Ren, Fu Wei, Philipp Zabel, Rob Herring,
Krzysztof Kozlowski, Conor Dooley
Cc: Michal Wilczynski, Yao Zi, Han Gao, linux-riscv, devicetree,
linux-kernel, Icenowy Zheng
The VO subsystem of TH1520 contains a few resets for the display
pipeline -- display, MIPI DSI and HDMI controllers.
Add support for them to the reset-th1520 driver.
Signed-off-by: Icenowy Zheng <uwu@icenowy.me>
---
drivers/reset/reset-th1520.c | 40 +++++++++++++++++++++++++++++++++++-
1 file changed, 39 insertions(+), 1 deletion(-)
diff --git a/drivers/reset/reset-th1520.c b/drivers/reset/reset-th1520.c
index 7874f0693e1b4..06e5dff7c524d 100644
--- a/drivers/reset/reset-th1520.c
+++ b/drivers/reset/reset-th1520.c
@@ -14,10 +14,20 @@
/* register offset in VOSYS_REGMAP */
#define TH1520_GPU_RST_CFG 0x0
#define TH1520_GPU_RST_CFG_MASK GENMASK(1, 0)
+#define TH1520_DPU_RST_CFG 0x4
+#define TH1520_DSI0_RST_CFG 0x8
+#define TH1520_DSI1_RST_CFG 0xc
+#define TH1520_HDMI_RST_CFG 0x14
/* register values */
#define TH1520_GPU_SW_GPU_RST BIT(0)
#define TH1520_GPU_SW_CLKGEN_RST BIT(1)
+#define TH1520_DPU_SW_DPU_HRST BIT(0)
+#define TH1520_DPU_SW_DPU_ARST BIT(1)
+#define TH1520_DPU_SW_DPU_CRST BIT(2)
+#define TH1520_DSI_SW_DSI_PRST BIT(0)
+#define TH1520_HDMI_SW_MAIN_RST BIT(0)
+#define TH1520_HDMI_SW_PRST BIT(1)
struct th1520_reset_priv {
struct reset_controller_dev rcdev;
@@ -37,7 +47,35 @@ static const struct th1520_reset_map th1520_resets[] = {
[TH1520_RESET_ID_GPU_CLKGEN] = {
.bit = TH1520_GPU_SW_CLKGEN_RST,
.reg = TH1520_GPU_RST_CFG,
- }
+ },
+ [TH1520_RESET_ID_DPU_AHB] = {
+ .bit = TH1520_DPU_SW_DPU_HRST,
+ .reg = TH1520_DPU_RST_CFG,
+ },
+ [TH1520_RESET_ID_DPU_AXI] = {
+ .bit = TH1520_DPU_SW_DPU_ARST,
+ .reg = TH1520_DPU_RST_CFG,
+ },
+ [TH1520_RESET_ID_DPU_CORE] = {
+ .bit = TH1520_DPU_SW_DPU_CRST,
+ .reg = TH1520_DPU_RST_CFG,
+ },
+ [TH1520_RESET_ID_DSI0_APB] = {
+ .bit = TH1520_DSI_SW_DSI_PRST,
+ .reg = TH1520_DSI0_RST_CFG,
+ },
+ [TH1520_RESET_ID_DSI1_APB] = {
+ .bit = TH1520_DSI_SW_DSI_PRST,
+ .reg = TH1520_DSI1_RST_CFG,
+ },
+ [TH1520_RESET_ID_HDMI] = {
+ .bit = TH1520_HDMI_SW_MAIN_RST,
+ .reg = TH1520_HDMI_RST_CFG,
+ },
+ [TH1520_RESET_ID_HDMI_APB] = {
+ .bit = TH1520_HDMI_SW_PRST,
+ .reg = TH1520_HDMI_RST_CFG,
+ },
};
static inline struct th1520_reset_priv *
--
2.50.1
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^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [PATCH 0/2] reset: th1520: add VOSYS resets for DPU/HDMI/DSI
2025-08-13 8:17 [PATCH 0/2] reset: th1520: add VOSYS resets for DPU/HDMI/DSI Icenowy Zheng
2025-08-13 8:17 ` [PATCH 1/2] dt-bindings: reset: thead,th1520-reset: add more VOSYS resets Icenowy Zheng
2025-08-13 8:17 ` [PATCH 2/2] reset: th1520: add resets for display pipeline Icenowy Zheng
@ 2025-08-14 10:55 ` Philipp Zabel
2 siblings, 0 replies; 6+ messages in thread
From: Philipp Zabel @ 2025-08-14 10:55 UTC (permalink / raw)
To: Icenowy Zheng, Drew Fustini, Guo Ren, Fu Wei, Rob Herring,
Krzysztof Kozlowski, Conor Dooley
Cc: Michal Wilczynski, Yao Zi, Han Gao, linux-riscv, devicetree,
linux-kernel
On Mi, 2025-08-13 at 16:17 +0800, Icenowy Zheng wrote:
> The VOSYS subsystem of T-Head TH1520 SoC contains a set of display
> pipeline in addition to the GPU. The display pipeline contains a DPU
> (display controller), a HDMI controller and 2 DSI controllers.
>
> This patchset adds reset controls for these devices.
>
> Icenowy Zheng (2):
> dt-bindings: reset: thead,th1520-reset: add more VOSYS resets
> reset: th1520: add resets for display pipeline
[...]
Applied to reset/next, thanks!
[1/2] dt-bindings: reset: thead,th1520-reset: add more VOSYS resets
https://git.pengutronix.de/cgit/pza/linux/commit/?id=f443d7c9ed46
[2/2] reset: th1520: add resets for display pipeline
https://git.pengutronix.de/cgit/pza/linux/commit/?id=d342031a5238
regards
Philipp
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^ permalink raw reply [flat|nested] 6+ messages in thread