From: Bjorn Andersson <bjorn.anders...@linaro.org>
Add driver for the interconnect buses found in Qualcomm QCS404-based
platforms. The topology consists of three NoCs that are controlled by
a remote processor that collects the aggregated bandwidth for each
master-slave pairs.
Signed-off-by: Bjorn Andersson <bjorn.anders...@linaro.org>
Signed-off-by: Georgi Djakov <georgi.dja...@linaro.org>
---
drivers/interconnect/qcom/Kconfig | 8 +
drivers/interconnect/qcom/Makefile | 2 +
drivers/interconnect/qcom/qcs404.c | 488 ++++++++++++++++++
drivers/interconnect/qcom/qcs404_ids.h | 86 +++
.../dt-bindings/interconnect/qcom,qcs404.h | 88 ++++
5 files changed, 672 insertions(+)
create mode 100644 drivers/interconnect/qcom/qcs404.c
create mode 100644 drivers/interconnect/qcom/qcs404_ids.h
create mode 100644 include/dt-bindings/interconnect/qcom,qcs404.h
diff --git a/drivers/interconnect/qcom/Kconfig
b/drivers/interconnect/qcom/Kconfig
index 290d330abe5a..cf9e6d430994 100644
--- a/drivers/interconnect/qcom/Kconfig
+++ b/drivers/interconnect/qcom/Kconfig
@@ -4,6 +4,14 @@ config INTERCONNECT_QCOM
help
Support for Qualcomm's Network-on-Chip interconnect hardware.
+config INTERCONNECT_QCOM_QCS404
+ tristate "Qualcomm QCS404 interconnect driver"
+ depends on INTERCONNECT_QCOM
+ depends on QCOM_SMD_RPM || COMPILE_TEST
+ help
+ This is a driver for the Qualcomm Network-on-Chip on qcs404-based
+ platforms.
+
config INTERCONNECT_QCOM_SDM845
tristate "Qualcomm SDM845 interconnect driver"
depends on INTERCONNECT_QCOM
diff --git a/drivers/interconnect/qcom/Makefile
b/drivers/interconnect/qcom/Makefile
index 1c1cea690f92..059ff325ee6c 100644
--- a/drivers/interconnect/qcom/Makefile
+++ b/drivers/interconnect/qcom/Makefile
@@ -1,5 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
+qnoc-qcs404-objs := qcs404.o
qnoc-sdm845-objs := sdm845.o
+obj-$(CONFIG_INTERCONNECT_QCOM_QCS404) += qnoc-qcs404.o
obj-$(CONFIG_INTERCONNECT_QCOM_SDM845) += qnoc-sdm845.o
diff --git a/drivers/interconnect/qcom/qcs404.c
b/drivers/interconnect/qcom/qcs404.c
new file mode 100644
index 000000000000..42d36db13ec0
--- /dev/null
+++ b/drivers/interconnect/qcom/qcs404.c
@@ -0,0 +1,488 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Linaro Ltd
+ */
+
+#include <dt-bindings/interconnect/qcom,qcs404.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/interconnect-provider.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/soc/qcom/smd-rpm.h>
+
+#include "qcs404_ids.h"
+
+#define RPM_BUS_MASTER_REQ 0x73616d62
+#define RPM_BUS_SLAVE_REQ 0x766c7362
+#define RPM_KEY_BW 0x00007762
+
+#define to_qcom_provider(_provider) \
+ container_of(_provider, struct qcom_icc_provider, provider)
+
+struct qcom_smd_rpm *qcs404_rpm;
+
+struct icc_rpm_smd_req {
+ __le32 key;
+ __le32 nbytes;
+ __le32 value;
+};
+
+struct qcom_icc_provider {
+ struct icc_provider provider;
+ struct clk *bus_clk;
+ struct clk *bus_a_clk;
+};
+
+#define QCS404_MAX_LINKS 12
+
+/**
+ * struct qcom_icc_node - Qualcomm specific interconnect nodes
+ * @name: the node name used in debugfs
+ * @id: a unique node identifier
+ * @links: an array of nodes where we can go next while traversing
+ * @num_links: the total number of @links
+ * @buswidth: width of the interconnect between a node and the bus (bytes)
+ * @mas_rpm_id: RPM id for devices that are bus masters
+ * @slv_rpm_id: RPM id for devices that are bus slaves
+ * @rate: current bus clock rate in Hz
+ */
+struct qcom_icc_node {
+ unsigned char *name;
+ u16 id;
+ u16 links[QCS404_MAX_LINKS];
+ u16 num_links;
+ u16 buswidth;
+ int mas_rpm_id;
+ int slv_rpm_id;
+ u64 rate;
+};
+
+struct qcom_icc_desc {
+ struct qcom_icc_node **nodes;
+ size_t num_nodes;
+};
+
+#define DEFINE_QNODE(_name, _id, _buswidth, _mas_rpm_id, _slv_rpm_id, \
+ _numlinks, ...) \
+ static struct qcom_icc_node _name = { \
+ .name = #_name, \
+ .id = _id, \
+ .buswidth = _buswidth, \
+ .mas_rpm_id = _mas_rpm_id, \
+ .slv_rpm_id = _slv_rpm_id, \
+ .num_links = _numlinks, \
+ .links = { __VA_ARGS__ }, \
+ }
+
+DEFINE_QNODE(mas_apps_proc, QCS404_MASTER_AMPSS_M0, 8, 0, -1, 2,
QCS404_SLAVE_EBI_CH0, QCS404_BIMC_SNOC_SLV);
+DEFINE_QNODE(mas_oxili, QCS404_MASTER_GRAPHICS_3D, 8, 6, -1, 2,
QCS404_SLAVE_EBI_CH0, QCS404_BIMC_SNOC_SLV);
+DEFINE_QNODE(mas_mdp, QCS404_MASTER_MDP_PORT0, 8, 8, -1, 2,
QCS404_SLAVE_EBI_CH0, QCS404_BIMC_SNOC_SLV);
+DEFINE_QNODE(mas_snoc_bimc_1, QCS404_SNOC_BIMC_1_MAS, 8, 76, -1, 1,
QCS404_SLAVE_EBI_CH0);
+DEFINE_QNODE(mas_tcu_0, QCS404_MASTER_TCU_0, 8, -1, -1, 2,
QCS404_SLAVE_EBI_CH0, QCS404_BIMC_SNOC_SLV);
+DEFINE_QNODE(mas_spdm, QCS404_MASTER_SPDM, 4, -1, -1, 1, QCS404_PNOC_INT_3);
+DEFINE_QNODE(mas_blsp_1, QCS404_MASTER_BLSP_1, 4, 41, -1, 1,
QCS404_PNOC_INT_3);
+DEFINE_QNODE(mas_blsp_2, QCS404_MASTER_BLSP_2, 4, 39, -1, 1,
QCS404_PNOC_INT_3);
+DEFINE_QNODE(mas_xi_usb_hs1, QCS404_MASTER_XM_USB_HS1, 8, 138, -1, 1,
QCS404_PNOC_INT_0);
+DEFINE_QNODE(mas_crypto, QCS404_MASTER_CRYPTO_CORE0, 8, 23, -1, 2,
QCS404_PNOC_SNOC_SLV, QCS404_PNOC_INT_2);
+DEFINE_QNODE(mas_sdcc_1, QCS404_MASTER_SDCC_1, 8, 33, -1, 1,
QCS404_PNOC_INT_0);
+DEFINE_QNODE(mas_sdcc_2, QCS404_MASTER_SDCC_2, 8, 35, -1, 1,
QCS404_PNOC_INT_0);
+DEFINE_QNODE(mas_snoc_pcnoc, QCS404_SNOC_PNOC_MAS, 8, 77, -1, 1,
QCS404_PNOC_INT_2);
+DEFINE_QNODE(mas_qpic, QCS404_MASTER_QPIC, 4, -1, -1, 1, QCS404_PNOC_INT_0);
+DEFINE_QNODE(mas_qdss_bam, QCS404_MASTER_QDSS_BAM, 4, -1, -1, 1,
QCS404_SNOC_QDSS_INT);
+DEFINE_QNODE(mas_bimc_snoc, QCS404_BIMC_SNOC_MAS, 8, 21, -1, 4,
QCS404_SLAVE_OCMEM_64, QCS404_SLAVE_CATS_128, QCS404_SNOC_INT_0,
QCS404_SNOC_INT_1);
+DEFINE_QNODE(mas_pcnoc_snoc, QCS404_PNOC_SNOC_MAS, 8, 29, -1, 3,
QCS404_SNOC_BIMC_1_SLV, QCS404_SNOC_INT_2, QCS404_SNOC_INT_0);
+DEFINE_QNODE(mas_qdss_etr, QCS404_MASTER_QDSS_ETR, 8, -1, -1, 1,
QCS404_SNOC_QDSS_INT);
+DEFINE_QNODE(mas_emac, QCS404_MASTER_EMAC, 8, -1, -1, 2,
QCS404_SNOC_BIMC_1_SLV, QCS404_SNOC_INT_1);
+DEFINE_QNODE(mas_pcie, QCS404_MASTER_PCIE, 8, -1, -1, 2,
QCS404_SNOC_BIMC_1_SLV, QCS404_SNOC_INT_1);
+DEFINE_QNODE(mas_usb3, QCS404_MASTER_USB3, 8, -1, -1, 2,
QCS404_SNOC_BIMC_1_SLV, QCS404_SNOC_INT_1);
+DEFINE_QNODE(pcnoc_int_0, QCS404_PNOC_INT_0, 8, 85, 114, 2,
QCS404_PNOC_SNOC_SLV, QCS404_PNOC_INT_2);
+DEFINE_QNODE(pcnoc_int_2, QCS404_PNOC_INT_2, 8, 124, 184, 12,
QCS404_PNOC_SLV_10, QCS404_SLAVE_TCU, QCS404_PNOC_SLV_11, QCS404_PNOC_SLV_2,
QCS404_PNOC_SLV_3, QCS404_PNOC_SLV_0, QCS404_PNOC_SLV_1, QCS404_PNOC_SLV_6,
QCS404_PNOC_SLV_7, QCS404_PNOC_SLV_4, QCS404_PNOC_SLV_8, QCS404_PNOC_SLV_9);
+DEFINE_QNODE(pcnoc_int_3, QCS404_PNOC_INT_3, 8, 125, 185, 1,
QCS404_PNOC_SNOC_SLV);
+DEFINE_QNODE(pcnoc_s_0, QCS404_PNOC_SLV_0, 4, 89, 118, 3, QCS404_SLAVE_PRNG,
QCS404_SLAVE_SPDM_WRAPPER, QCS404_SLAVE_PDM);
+DEFINE_QNODE(pcnoc_s_1, QCS404_PNOC_SLV_1, 4, 90, 119, 1, QCS404_SLAVE_TCSR);
+DEFINE_QNODE(pcnoc_s_2, QCS404_PNOC_SLV_2, 4, -1, -1, 1,
QCS404_SLAVE_GRAPHICS_3D_CFG);
+DEFINE_QNODE(pcnoc_s_3, QCS404_PNOC_SLV_3, 4, 92, 121, 1,
QCS404_SLAVE_MESSAGE_RAM);
+DEFINE_QNODE(pcnoc_s_4, QCS404_PNOC_SLV_4, 4, 93, 122, 1,
QCS404_SLAVE_SNOC_CFG);
+DEFINE_QNODE(pcnoc_s_6, QCS404_PNOC_SLV_6, 4, 94, 123, 3, QCS404_SLAVE_BLSP_1,
QCS404_SLAVE_TLMM_NORTH, QCS404_SLAVE_EMAC_CFG);
+DEFINE_QNODE(pcnoc_s_7, QCS404_PNOC_SLV_7, 4, 95, 124, 4,
QCS404_SLAVE_TLMM_SOUTH, QCS404_SLAVE_DISPLAY_CFG, QCS404_SLAVE_SDCC_1,
QCS404_SLAVE_PCIE_1, QCS404_SLAVE_SDCC_2);
+DEFINE_QNODE(pcnoc_s_8, QCS404_PNOC_SLV_8, 4, 96, 125, 1,
QCS404_SLAVE_CRYPTO_0_CFG);
+DEFINE_QNODE(pcnoc_s_9, QCS404_PNOC_SLV_9, 4, 97, 126, 3, QCS404_SLAVE_BLSP_2,
QCS404_SLAVE_TLMM_EAST, QCS404_SLAVE_PMIC_ARB);
+DEFINE_QNODE(pcnoc_s_10, QCS404_PNOC_SLV_10, 4, 157, -1, 1,
QCS404_SLAVE_USB_HS);
+DEFINE_QNODE(pcnoc_s_11, QCS404_PNOC_SLV_11, 4, 158, 246, 1,
QCS404_SLAVE_USB3);
+DEFINE_QNODE(qdss_int, QCS404_SNOC_QDSS_INT, 8, -1, -1, 2,
QCS404_SNOC_BIMC_1_SLV, QCS404_SNOC_INT_1);
+DEFINE_QNODE(snoc_int_0, QCS404_SNOC_INT_0, 8, 99, 130, 3, QCS404_SLAVE_LPASS,
QCS404_SLAVE_APPSS, QCS404_SLAVE_WCSS);
+DEFINE_QNODE(snoc_int_1, QCS404_SNOC_INT_1, 8, 100, 131, 2,
QCS404_SNOC_PNOC_SLV, QCS404_SNOC_INT_2);
+DEFINE_QNODE(snoc_int_2, QCS404_SNOC_INT_2, 8, 134, 197, 2,
QCS404_SLAVE_QDSS_STM, QCS404_SLAVE_OCIMEM);
+DEFINE_QNODE(slv_ebi, QCS404_SLAVE_EBI_CH0, 8, -1, 0, 0, 0);
+DEFINE_QNODE(slv_bimc_snoc, QCS404_BIMC_SNOC_SLV, 8, -1, 2, 1,
QCS404_BIMC_SNOC_MAS);
+DEFINE_QNODE(slv_spdm, QCS404_SLAVE_SPDM_WRAPPER, 4, -1, -1, 0, 0);
+DEFINE_QNODE(slv_pdm, QCS404_SLAVE_PDM, 4, -1, 41, 0, 0);
+DEFINE_QNODE(slv_prng, QCS404_SLAVE_PRNG, 4, -1, 44, 0, 0);
+DEFINE_QNODE(slv_tcsr, QCS404_SLAVE_TCSR, 4, -1, 50, 0, 0);
+DEFINE_QNODE(slv_snoc_cfg, QCS404_SLAVE_SNOC_CFG, 4, -1, 70, 0, 0);
+DEFINE_QNODE(slv_message_ram, QCS404_SLAVE_MESSAGE_RAM, 4, -1, 55, 0, 0);
+DEFINE_QNODE(slv_disp_ss_cfg, QCS404_SLAVE_DISPLAY_CFG, 4, -1, -1, 0, 0);
+DEFINE_QNODE(slv_gpu_cfg, QCS404_SLAVE_GRAPHICS_3D_CFG, 4, -1, -1, 0, 0);
+DEFINE_QNODE(slv_blsp_1, QCS404_SLAVE_BLSP_1, 4, -1, 39, 0, 0);
+DEFINE_QNODE(slv_tlmm_north, QCS404_SLAVE_TLMM_NORTH, 4, -1, 214, 0, 0);
+DEFINE_QNODE(slv_pcie, QCS404_SLAVE_PCIE_1, 4, -1, -1, 0, 0);
+DEFINE_QNODE(slv_ethernet, QCS404_SLAVE_EMAC_CFG, 4, -1, -1, 0, 0);
+DEFINE_QNODE(slv_blsp_2, QCS404_SLAVE_BLSP_2, 4, -1, 37, 0, 0);
+DEFINE_QNODE(slv_tlmm_east, QCS404_SLAVE_TLMM_EAST, 4, -1, 213, 0, 0);
+DEFINE_QNODE(slv_tcu, QCS404_SLAVE_TCU, 8, -1, -1, 0, 0);
+DEFINE_QNODE(slv_pmic_arb, QCS404_SLAVE_PMIC_ARB, 4, -1, 59, 0, 0);
+DEFINE_QNODE(slv_sdcc_1, QCS404_SLAVE_SDCC_1, 4, -1, 31, 0, 0);
+DEFINE_QNODE(slv_sdcc_2, QCS404_SLAVE_SDCC_2, 4, -1, 33, 0, 0);
+DEFINE_QNODE(slv_tlmm_south, QCS404_SLAVE_TLMM_SOUTH, 4, -1, -1, 0, 0);
+DEFINE_QNODE(slv_usb_hs, QCS404_SLAVE_USB_HS, 4, -1, 40, 0, 0);
+DEFINE_QNODE(slv_usb3, QCS404_SLAVE_USB3, 4, -1, 22, 0, 0);
+DEFINE_QNODE(slv_crypto_0_cfg, QCS404_SLAVE_CRYPTO_0_CFG, 4, -1, 52, 0, 0);
+DEFINE_QNODE(slv_pcnoc_snoc, QCS404_PNOC_SNOC_SLV, 8, -1, 45, 1,
QCS404_PNOC_SNOC_MAS);
+DEFINE_QNODE(slv_kpss_ahb, QCS404_SLAVE_APPSS, 4, -1, -1, 0, 0);
+DEFINE_QNODE(slv_wcss, QCS404_SLAVE_WCSS, 4, -1, 23, 0, 0);
+DEFINE_QNODE(slv_snoc_bimc_1, QCS404_SNOC_BIMC_1_SLV, 8, -1, 104, 1,
QCS404_SNOC_BIMC_1_MAS);
+DEFINE_QNODE(slv_imem, QCS404_SLAVE_OCIMEM, 8, -1, 26, 0, 0);
+DEFINE_QNODE(slv_snoc_pcnoc, QCS404_SNOC_PNOC_SLV, 8, -1, 28, 1,
QCS404_SNOC_PNOC_MAS);
+DEFINE_QNODE(slv_qdss_stm, QCS404_SLAVE_QDSS_STM, 4, -1, 30, 0, 0);
+DEFINE_QNODE(slv_cats_0, QCS404_SLAVE_CATS_128, 16, -1, -1, 0, 0);
+DEFINE_QNODE(slv_cats_1, QCS404_SLAVE_OCMEM_64, 8, -1, -1, 0, 0);
+DEFINE_QNODE(slv_lpass, QCS404_SLAVE_LPASS, 4, -1, -1, 0, 0);
+
+static struct qcom_icc_node *qcs404_bimc_nodes[] = {
+ [MASTER_AMPSS_M0] = &mas_apps_proc,
+ [MASTER_OXILI] = &mas_oxili,
+ [MASTER_MDP_PORT0] = &mas_mdp,
+ [MASTER_SNOC_BIMC_1] = &mas_snoc_bimc_1,
+ [MASTER_TCU_0] = &mas_tcu_0,
+ [SLAVE_EBI_CH0] = &slv_ebi,
+ [SLAVE_BIMC_SNOC] = &slv_bimc_snoc,
+};
+
+static struct qcom_icc_desc qcs404_bimc = {
+ .nodes = qcs404_bimc_nodes,
+ .num_nodes = ARRAY_SIZE(qcs404_bimc_nodes),
+};
+
+static struct qcom_icc_node *qcs404_pcnoc_nodes[] = {
+ [MASTER_SPDM] = &mas_spdm,
+ [MASTER_BLSP_1] = &mas_blsp_1,
+ [MASTER_BLSP_2] = &mas_blsp_2,
+ [MASTER_XI_USB_HS1] = &mas_xi_usb_hs1,
+ [MASTER_CRYPT0] = &mas_crypto,
+ [MASTER_SDCC_1] = &mas_sdcc_1,
+ [MASTER_SDCC_2] = &mas_sdcc_2,
+ [MASTER_SNOC_PCNOC] = &mas_snoc_pcnoc,
+ [MASTER_QPIC] = &mas_qpic,
+ [PCNOC_INT_0] = &pcnoc_int_0,
+ [PCNOC_INT_2] = &pcnoc_int_2,
+ [PCNOC_INT_3] = &pcnoc_int_3,
+ [PCNOC_S_0] = &pcnoc_s_0,
+ [PCNOC_S_1] = &pcnoc_s_1,
+ [PCNOC_S_2] = &pcnoc_s_2,
+ [PCNOC_S_3] = &pcnoc_s_3,
+ [PCNOC_S_4] = &pcnoc_s_4,
+ [PCNOC_S_6] = &pcnoc_s_6,
+ [PCNOC_S_7] = &pcnoc_s_7,
+ [PCNOC_S_8] = &pcnoc_s_8,
+ [PCNOC_S_9] = &pcnoc_s_9,
+ [PCNOC_S_10] = &pcnoc_s_10,
+ [PCNOC_S_11] = &pcnoc_s_11,
+ [SLAVE_SPDM] = &slv_spdm,
+ [SLAVE_PDM] = &slv_pdm,
+ [SLAVE_PRNG] = &slv_prng,
+ [SLAVE_TCSR] = &slv_tcsr,
+ [SLAVE_SNOC_CFG] = &slv_snoc_cfg,
+ [SLAVE_MESSAGE_RAM] = &slv_message_ram,
+ [SLAVE_DISP_SS_CFG] = &slv_disp_ss_cfg,
+ [SLAVE_GPU_CFG] = &slv_gpu_cfg,
+ [SLAVE_BLSP_1] = &slv_blsp_1,
+ [SLAVE_BLSP_2] = &slv_blsp_2,
+ [SLAVE_TLMM_NORTH] = &slv_tlmm_north,
+ [SLAVE_PCIE] = &slv_pcie,
+ [SLAVE_ETHERNET] = &slv_ethernet,
+ [SLAVE_TLMM_EAST] = &slv_tlmm_east,
+ [SLAVE_TCU] = &slv_tcu,
+ [SLAVE_PMIC_ARB] = &slv_pmic_arb,
+ [SLAVE_SDCC_1] = &slv_sdcc_1,
+ [SLAVE_SDCC_2] = &slv_sdcc_2,
+ [SLAVE_TLMM_SOUTH] = &slv_tlmm_south,
+ [SLAVE_USB_HS] = &slv_usb_hs,
+ [SLAVE_USB3] = &slv_usb3,
+ [SLAVE_CRYPTO_0_CFG] = &slv_crypto_0_cfg,
+ [SLAVE_PCNOC_SNOC] = &slv_pcnoc_snoc,
+};
+
+static struct qcom_icc_desc qcs404_pcnoc = {
+ .nodes = qcs404_pcnoc_nodes,
+ .num_nodes = ARRAY_SIZE(qcs404_pcnoc_nodes),
+};
+
+static struct qcom_icc_node *qcs404_snoc_nodes[] = {
+ [MASTER_QDSS_BAM] = &mas_qdss_bam,
+ [MASTER_BIMC_SNOC] = &mas_bimc_snoc,
+ [MASTER_PCNOC_SNOC] = &mas_pcnoc_snoc,
+ [MASTER_QDSS_ETR] = &mas_qdss_etr,
+ [MASTER_EMAC] = &mas_emac,
+ [MASTER_PCIE] = &mas_pcie,
+ [MASTER_USB3] = &mas_usb3,
+ [QDSS_INT] = &qdss_int,
+ [SNOC_INT_0] = &snoc_int_0,
+ [SNOC_INT_1] = &snoc_int_1,
+ [SNOC_INT_2] = &snoc_int_2,
+ [SLAVE_KPSS_AHB] = &slv_kpss_ahb,
+ [SLAVE_WCSS] = &slv_wcss,
+ [SLAVE_SNOC_BIMC_1] = &slv_snoc_bimc_1,
+ [SLAVE_IMEM] = &slv_imem,
+ [SLAVE_SNOC_PCNOC] = &slv_snoc_pcnoc,
+ [SLAVE_QDSS_STM] = &slv_qdss_stm,
+ [SLAVE_CATS_0] = &slv_cats_0,
+ [SLAVE_CATS_1] = &slv_cats_1,
+ [SLAVE_LPASS] = &slv_lpass,
+};
+
+static struct qcom_icc_desc qcs404_snoc = {
+ .nodes = qcs404_snoc_nodes,
+ .num_nodes = ARRAY_SIZE(qcs404_snoc_nodes),
+};
+
+static int qcom_icc_aggregate(struct icc_node *node, u32 avg_bw, u32 peak_bw,
+ u32 *agg_avg, u32 *agg_peak)
+{
+ *agg_avg += avg_bw;
+ *agg_peak = max(*agg_peak, peak_bw);
+
+ return 0;
+}
+
+static int qcom_icc_rpm_smd_send(int ctx, int rsc_type, int id, u32 val)
+{
+ struct icc_rpm_smd_req req = {
+ .key = cpu_to_le32(RPM_KEY_BW),
+ .nbytes = cpu_to_le32(sizeof(u32)),
+ .value = cpu_to_le32(val),
+ };
+
+ return qcom_rpm_smd_write(qcs404_rpm, ctx, rsc_type, id, &req,
+ sizeof(req));
+}
+
+static int qcom_icc_set(struct icc_node *src, struct icc_node *dst)
+{
+ struct qcom_icc_provider *qp;
+ struct qcom_icc_node *qn;
+ struct icc_provider *provider;
+ struct icc_node *n;
+ u64 sum_bw;
+ u64 max_peak_bw;
+ u64 rate;
+ u32 agg_avg = 0;
+ u32 agg_peak = 0;
+ int ret = 0;
+
+ qn = src->data;
+ provider = src->provider;
+ qp = to_qcom_provider(provider);
+
+ list_for_each_entry(n, &provider->nodes, node_list)
+ qcom_icc_aggregate(n, n->avg_bw, n->peak_bw,
+ &agg_avg, &agg_peak);
+
+ sum_bw = icc_units_to_bps(agg_avg);
+ max_peak_bw = icc_units_to_bps(agg_peak);
+
+ /* send message to the RPM processor */
+ if (qn->mas_rpm_id != -1) {
+ ret = qcom_icc_rpm_smd_send(QCOM_SMD_RPM_ACTIVE_STATE,
+ RPM_BUS_MASTER_REQ,
+ qn->mas_rpm_id,
+ sum_bw);
+ if (ret) {
+ pr_err("qcom_icc_rpm_smd_send mas %d error %d\n",
+ qn->mas_rpm_id, ret);
+ return ret;
+ }
+ }
+
+ if (qn->slv_rpm_id != -1) {
+ ret = qcom_icc_rpm_smd_send(QCOM_SMD_RPM_ACTIVE_STATE,
+ RPM_BUS_SLAVE_REQ,
+ qn->slv_rpm_id,
+ sum_bw);
+ if (ret) {
+ pr_err("qcom_icc_rpm_smd_send slv error %d\n",
+ ret);
+ return ret;
+ }
+ }
+
+ rate = max(sum_bw, max_peak_bw);
+
+ do_div(rate, qn->buswidth);
+
+ if (qn->rate != rate) {
+ ret = clk_set_rate(qp->bus_clk, rate);
+ if (ret) {
+ pr_err("set clk rate %lld error %d\n", rate, ret);
+ return ret;
+ }
+
+ ret = clk_set_rate(qp->bus_a_clk, rate);
+ if (ret) {
+ pr_err("set clk rate %lld error %d\n", rate, ret);
+ return ret;
+ }
+
+ qn->rate = rate;
+ }
+
+ return ret;
+}
+
+static int qnoc_probe(struct platform_device *pdev)
+{
+ const struct qcom_icc_desc *desc;
+ struct icc_onecell_data *data;
+ struct icc_provider *provider;
+ struct qcom_icc_node **qnodes;
+ struct qcom_icc_provider *qp;
+ struct icc_node *node;
+ size_t num_nodes, i;
+ int ret;
+
+ /* wait for RPM */
+ qcs404_rpm = dev_get_drvdata(pdev->dev.parent);
+ if (!qcs404_rpm) {
+ dev_err(&pdev->dev, "unable to retrieve handle to RPM\n");
+ return -ENODEV;
+ }
+
+ desc = of_device_get_match_data(&pdev->dev);
+ if (!desc)
+ return -EINVAL;
+
+ qnodes = desc->nodes;
+ num_nodes = desc->num_nodes;
+
+ qp = devm_kzalloc(&pdev->dev, sizeof(*qp), GFP_KERNEL);
+ if (!qp)
+ return -ENOMEM;
+
+ data = devm_kcalloc(&pdev->dev, num_nodes, sizeof(*node), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ qp->bus_clk = devm_clk_get(&pdev->dev, "bus_clk");
+ if (IS_ERR(qp->bus_clk))
+ return PTR_ERR(qp->bus_clk);
+
+ ret = clk_prepare_enable(qp->bus_clk);
+ if (ret) {
+ dev_err(&pdev->dev, "error enabling bus_clk: %d\n", ret);
+ return ret;
+ }
+
+ qp->bus_a_clk = devm_clk_get(&pdev->dev, "bus_a_clk");
+ if (IS_ERR(qp->bus_a_clk))
+ return PTR_ERR(qp->bus_a_clk);
+
+ ret = clk_prepare_enable(qp->bus_a_clk);
+ if (ret) {
+ dev_err(&pdev->dev, "error enabling bus_a_clk: %d\n", ret);
+ clk_disable_unprepare(qp->bus_clk);
+ return ret;
+ }
+
+ provider = &qp->provider;
+ INIT_LIST_HEAD(&provider->nodes);
+ provider->dev = &pdev->dev;
+ provider->set = qcom_icc_set;
+ provider->aggregate = qcom_icc_aggregate;
+ provider->xlate = of_icc_xlate_onecell;
+ provider->data = data;
+
+ ret = icc_provider_add(provider);
+ if (ret) {
+ dev_err(&pdev->dev, "error adding interconnect provider\n");
+ clk_disable_unprepare(qp->bus_clk);
+ clk_disable_unprepare(qp->bus_a_clk);
+ return ret;
+ }
+
+ for (i = 0; i < num_nodes; i++) {
+ size_t j;
+
+ node = icc_node_create(qnodes[i]->id);
+ if (IS_ERR(node)) {
+ ret = PTR_ERR(node);
+ goto err;
+ }
+
+ node->name = qnodes[i]->name;
+ node->data = qnodes[i];
+ icc_node_add(node, provider);
+
+ dev_dbg(&pdev->dev, "registered node %s\n", node->name);
+
+ /* populate links */
+ for (j = 0; j < qnodes[i]->num_links; j++)
+ icc_link_create(node, qnodes[i]->links[j]);
+
+ data->nodes[i] = node;
+ }
+ data->num_nodes = num_nodes;
+
+ platform_set_drvdata(pdev, qp);
+
+ return ret;
+err:
+ list_for_each_entry(node, &provider->nodes, node_list) {
+ icc_node_del(node);
+ icc_node_destroy(node->id);
+ }
+ clk_disable_unprepare(qp->bus_clk);
+ clk_disable_unprepare(qp->bus_a_clk);
+ icc_provider_del(provider);
+
+ return ret;
+}
+
+static int qnoc_remove(struct platform_device *pdev)
+{
+ struct qcom_icc_provider *qp = platform_get_drvdata(pdev);
+ struct icc_provider *provider = &qp->provider;
+ struct icc_node *n;
+
+ list_for_each_entry(n, &provider->nodes, node_list) {
+ icc_node_del(n);
+ icc_node_destroy(n->id);
+ }
+ clk_disable_unprepare(qp->bus_clk);
+ clk_disable_unprepare(qp->bus_a_clk);
+
+ return icc_provider_del(provider);
+}
+
+static const struct of_device_id qcs404_noc_of_match[] = {
+ { .compatible = "qcom,qcs404-bimc", .data = &qcs404_bimc },
+ { .compatible = "qcom,qcs404-pcnoc", .data = &qcs404_pcnoc },
+ { .compatible = "qcom,qcs404-snoc", .data = &qcs404_snoc },
+ { },
+};
+MODULE_DEVICE_TABLE(of, qnoc_of_match);
+
+static struct platform_driver qnoc_driver = {
+ .probe = qnoc_probe,
+ .remove = qnoc_remove,
+ .driver = {
+ .name = "qnoc-qcs404",
+ .of_match_table = qcs404_noc_of_match,
+ },
+};
+module_platform_driver(qnoc_driver);
+MODULE_DESCRIPTION("Qualcomm QCS404 NoC driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/interconnect/qcom/qcs404_ids.h
b/drivers/interconnect/qcom/qcs404_ids.h
new file mode 100644
index 000000000000..bcf161829241
--- /dev/null
+++ b/drivers/interconnect/qcom/qcs404_ids.h
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Qualcomm QCS404 interconnect IDs
+ *
+ * Copyright (c) 2019, Linaro Ltd.
+ * Author: Georgi Djakov <georgi.dja...@linaro.org>
+ */
+
+#ifndef __DRIVERS_INTERCONNECT_QCOM_QCS404_IDS_H
+#define __DRIVERS_INTERCONNECT_QCOM_QCS404_IDS_H
+
+#define QCS404_MASTER_AMPSS_M0 0
+#define QCS404_MASTER_GRAPHICS_3D 1
+#define QCS404_MASTER_MDP_PORT0 2
+#define QCS404_SNOC_BIMC_1_MAS 3
+#define QCS404_MASTER_TCU_0 4
+#define QCS404_MASTER_SPDM 5
+#define QCS404_MASTER_BLSP_1 6
+#define QCS404_MASTER_BLSP_2 7
+#define QCS404_MASTER_XM_USB_HS1 8
+#define QCS404_MASTER_CRYPTO_CORE0 9
+#define QCS404_MASTER_SDCC_1 10
+#define QCS404_MASTER_SDCC_2 11
+#define QCS404_SNOC_PNOC_MAS 12
+#define QCS404_MASTER_QPIC 13
+#define QCS404_MASTER_QDSS_BAM 14
+#define QCS404_BIMC_SNOC_MAS 15
+#define QCS404_PNOC_SNOC_MAS 16
+#define QCS404_MASTER_QDSS_ETR 17
+#define QCS404_MASTER_EMAC 18
+#define QCS404_MASTER_PCIE 19
+#define QCS404_MASTER_USB3 20
+#define QCS404_PNOC_INT_0 21
+#define QCS404_PNOC_INT_2 22
+#define QCS404_PNOC_INT_3 23
+#define QCS404_PNOC_SLV_0 24
+#define QCS404_PNOC_SLV_1 25
+#define QCS404_PNOC_SLV_2 26
+#define QCS404_PNOC_SLV_3 27
+#define QCS404_PNOC_SLV_4 28
+#define QCS404_PNOC_SLV_6 29
+#define QCS404_PNOC_SLV_7 30
+#define QCS404_PNOC_SLV_8 31
+#define QCS404_PNOC_SLV_9 32
+#define QCS404_PNOC_SLV_10 33
+#define QCS404_PNOC_SLV_11 34
+#define QCS404_SNOC_QDSS_INT 35
+#define QCS404_SNOC_INT_0 36
+#define QCS404_SNOC_INT_1 37
+#define QCS404_SNOC_INT_2 38
+#define QCS404_SLAVE_EBI_CH0 39
+#define QCS404_BIMC_SNOC_SLV 40
+#define QCS404_SLAVE_SPDM_WRAPPER 41
+#define QCS404_SLAVE_PDM 42
+#define QCS404_SLAVE_PRNG 43
+#define QCS404_SLAVE_TCSR 44
+#define QCS404_SLAVE_SNOC_CFG 45
+#define QCS404_SLAVE_MESSAGE_RAM 46
+#define QCS404_SLAVE_DISPLAY_CFG 47
+#define QCS404_SLAVE_GRAPHICS_3D_CFG 48
+#define QCS404_SLAVE_BLSP_1 49
+#define QCS404_SLAVE_TLMM_NORTH 50
+#define QCS404_SLAVE_PCIE_1 51
+#define QCS404_SLAVE_EMAC_CFG 52
+#define QCS404_SLAVE_BLSP_2 53
+#define QCS404_SLAVE_TLMM_EAST 54
+#define QCS404_SLAVE_TCU 55
+#define QCS404_SLAVE_PMIC_ARB 56
+#define QCS404_SLAVE_SDCC_1 57
+#define QCS404_SLAVE_SDCC_2 58
+#define QCS404_SLAVE_TLMM_SOUTH 59
+#define QCS404_SLAVE_USB_HS 60
+#define QCS404_SLAVE_USB3 61
+#define QCS404_SLAVE_CRYPTO_0_CFG 62
+#define QCS404_PNOC_SNOC_SLV 63
+#define QCS404_SLAVE_APPSS 64
+#define QCS404_SLAVE_WCSS 65
+#define QCS404_SNOC_BIMC_1_SLV 66
+#define QCS404_SLAVE_OCIMEM 67
+#define QCS404_SNOC_PNOC_SLV 68
+#define QCS404_SLAVE_QDSS_STM 69
+#define QCS404_SLAVE_CATS_128 70
+#define QCS404_SLAVE_OCMEM_64 71
+#define QCS404_SLAVE_LPASS 72
+
+#endif
diff --git a/include/dt-bindings/interconnect/qcom,qcs404.h
b/include/dt-bindings/interconnect/qcom,qcs404.h
new file mode 100644
index 000000000000..960f6e39c5f2
--- /dev/null
+++ b/include/dt-bindings/interconnect/qcom,qcs404.h
@@ -0,0 +1,88 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Qualcomm interconnect IDs
+ *
+ * Copyright (c) 2019, Linaro Ltd.
+ * Author: Georgi Djakov <georgi.dja...@linaro.org>
+ */
+
+#ifndef __DT_BINDINGS_INTERCONNECT_QCOM_QCS404_H
+#define __DT_BINDINGS_INTERCONNECT_QCOM_QCS404_H
+
+#define MASTER_AMPSS_M0 0
+#define MASTER_OXILI 1
+#define MASTER_MDP_PORT0 2
+#define MASTER_SNOC_BIMC_1 3
+#define MASTER_TCU_0 4
+#define SLAVE_EBI_CH0 5
+#define SLAVE_BIMC_SNOC 6
+
+#define MASTER_SPDM 0
+#define MASTER_BLSP_1 1
+#define MASTER_BLSP_2 2
+#define MASTER_XI_USB_HS1 3
+#define MASTER_CRYPT0 4
+#define MASTER_SDCC_1 5
+#define MASTER_SDCC_2 6
+#define MASTER_SNOC_PCNOC 7
+#define MASTER_QPIC 8
+#define PCNOC_INT_0 9
+#define PCNOC_INT_2 10
+#define PCNOC_INT_3 11
+#define PCNOC_S_0 12
+#define PCNOC_S_1 13
+#define PCNOC_S_2 14
+#define PCNOC_S_3 15
+#define PCNOC_S_4 16
+#define PCNOC_S_6 17
+#define PCNOC_S_7 18
+#define PCNOC_S_8 19
+#define PCNOC_S_9 20
+#define PCNOC_S_10 21
+#define PCNOC_S_11 22
+#define SLAVE_SPDM 23
+#define SLAVE_PDM 24
+#define SLAVE_PRNG 25
+#define SLAVE_TCSR 26
+#define SLAVE_SNOC_CFG 27
+#define SLAVE_MESSAGE_RAM 28
+#define SLAVE_DISP_SS_CFG 29
+#define SLAVE_GPU_CFG 30
+#define SLAVE_BLSP_1 31
+#define SLAVE_BLSP_2 32
+#define SLAVE_TLMM_NORTH 33
+#define SLAVE_PCIE 34
+#define SLAVE_ETHERNET 35
+#define SLAVE_TLMM_EAST 36
+#define SLAVE_TCU 37
+#define SLAVE_PMIC_ARB 38
+#define SLAVE_SDCC_1 39
+#define SLAVE_SDCC_2 40
+#define SLAVE_TLMM_SOUTH 41
+#define SLAVE_USB_HS 42
+#define SLAVE_USB3 43
+#define SLAVE_CRYPTO_0_CFG 44
+#define SLAVE_PCNOC_SNOC 45
+
+#define MASTER_QDSS_BAM 0
+#define MASTER_BIMC_SNOC 1
+#define MASTER_PCNOC_SNOC 2
+#define MASTER_QDSS_ETR 3
+#define MASTER_EMAC 4
+#define MASTER_PCIE 5
+#define MASTER_USB3 6
+#define QDSS_INT 7
+#define SNOC_INT_0 8
+#define SNOC_INT_1 9
+#define SNOC_INT_2 10
+#define SLAVE_KPSS_AHB 11
+#define SLAVE_WCSS 12
+#define SLAVE_SNOC_BIMC_1 13
+#define SLAVE_IMEM 14
+#define SLAVE_SNOC_PCNOC 15
+#define SLAVE_QDSS_STM 16
+#define SLAVE_CATS_0 17
+#define SLAVE_CATS_1 18
+#define SLAVE_LPASS 19
+
+#endif
