Re: [PATCH RFC/WIP v2 4/9] arm64: dts: qcom: sa8775p: Add support for camss
From: Suresh Vankadara
Date: Sat May 10 2025 - 03:15:27 EST
On 4/27/2025 12:31 PM, Vikram Sharma wrote:
Add changes to support the camera subsystem on the SA8775P.
Co-developed-by: Suresh Vankadara <quic_svankada@xxxxxxxxxxx>
Signed-off-by: Suresh Vankadara <quic_svankada@xxxxxxxxxxx>
Signed-off-by: Vikram Sharma <quic_vikramsa@xxxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/sa8775p.dtsi | 187 ++++++++++++++++++++++++++
1 file changed, 187 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
index 5bd0c03476b1..81eadb2bb663 100644
--- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
+++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
@@ -7,6 +7,7 @@
#include <dt-bindings/interconnect/qcom,icc.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/clock/qcom,rpmh.h>
+#include <dt-bindings/clock/qcom,sa8775p-camcc.h>
#include <dt-bindings/clock/qcom,sa8775p-dispcc.h>
#include <dt-bindings/clock/qcom,sa8775p-gcc.h>
#include <dt-bindings/clock/qcom,sa8775p-gpucc.h>
@@ -3940,6 +3941,192 @@ videocc: clock-controller@abf0000 {
#power-domain-cells = <1>;
};
+ camss: isp@ac7a000 {
+ compatible = "qcom,sa8775p-camss";
If more number of nodes are added for CAMSS, adding isp in compatible
string helps to differentiate.
+ reg-names = "csid0",
+ "csid1",
+ "csid_lite0",
+ "csid_lite1",
+ "csid_lite2",
+ "csid_lite3",
+ "csid_lite4",
+ "csid_wrapper",
csid wrapper is top register set, which is applicable for both csid 0
and csid 1. It is logical to keep along with csid0 and csid1, instead of
alpha numerical order.
+
+ clocks = <&camcc CAM_CC_CAMNOC_AXI_CLK>,
+ <&camcc CAM_CC_CORE_AHB_CLK>,
+ <&camcc CAM_CC_CPAS_AHB_CLK>,
+ <&camcc CAM_CC_CPAS_FAST_AHB_CLK>,
+ <&camcc CAM_CC_CPAS_IFE_LITE_CLK>,
+ <&camcc CAM_CC_CPAS_IFE_0_CLK>,
+ <&camcc CAM_CC_CPAS_IFE_1_CLK>,
+ <&camcc CAM_CC_CSID_CLK>,
+ <&camcc CAM_CC_CSIPHY0_CLK>,
+ <&camcc CAM_CC_CSI0PHYTIMER_CLK>,
+ <&camcc CAM_CC_CSIPHY1_CLK>,
+ <&camcc CAM_CC_CSI1PHYTIMER_CLK>,
+ <&camcc CAM_CC_CSIPHY2_CLK>,
+ <&camcc CAM_CC_CSI2PHYTIMER_CLK>,
+ <&camcc CAM_CC_CSIPHY3_CLK>,
+ <&camcc CAM_CC_CSI3PHYTIMER_CLK>,
+ <&camcc CAM_CC_CSID_CSIPHY_RX_CLK>,
+ <&gcc GCC_CAMERA_HF_AXI_CLK>,
+ <&gcc GCC_CAMERA_SF_AXI_CLK>,
+ <&camcc CAM_CC_ICP_AHB_CLK>,
+ <&camcc CAM_CC_IFE_0_CLK>,
+ <&camcc CAM_CC_IFE_0_FAST_AHB_CLK>,
+ <&camcc CAM_CC_IFE_1_CLK>,
+ <&camcc CAM_CC_IFE_1_FAST_AHB_CLK>,
+ <&camcc CAM_CC_IFE_LITE_CLK>,
+ <&camcc CAM_CC_IFE_LITE_AHB_CLK>,
+ <&camcc CAM_CC_IFE_LITE_CPHY_RX_CLK>,
+ <&camcc CAM_CC_IFE_LITE_CSID_CLK>;
+ clock-names = "camnoc_axi",
+ "core_ahb",
+ "cpas_ahb",
+ "cpas_fast_ahb_clk",
+ "cpas_ife_lite",
+ "cpas_vfe0",
+ "cpas_vfe1",
Maintain consistency on vfe/ife in complete camss node. In reg section,
vfe is used for full and lite version. in clock-names section ife lite
and vfe are used. As clock IDs upstream and ife is used for full and
lite, this convention will be followed in camss node as well.
+ "csid",
+ "csiphy0",
+ "csiphy0_timer",
+ "csiphy1",
+ "csiphy1_timer",
+ "csiphy2",
+ "csiphy2_timer",
+ "csiphy3",
+ "csiphy3_timer",
+ "csiphy_rx",
+ "gcc_axi_hf",
+ "gcc_axi_sf",
+ "icp_ahb",
sf and icp_ahb clocks needed?
+
+ interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
+ &config_noc SLAVE_CAMERA_CFG QCOM_ICC_TAG_ACTIVE_ONLY>,
+ <&mmss_noc MASTER_CAMNOC_HF QCOM_ICC_TAG_ALWAYS
+ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>,
+ <&mmss_noc MASTER_CAMNOC_SF QCOM_ICC_TAG_ACTIVE_ONLY
+ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>;
+ interconnect-names = "ahb",
+ "hf_0",
+ "sf_0";
sf_0 needed?
+
+ iommus = <&apps_smmu 0x3400 0x20>;
Regards,
Suresh Vankadara.