linux-kernel - [PATCH v8 6/7] clk: qcom: ipq9574: Use icc-clk for enabling NoC related clocks

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Message-ID: <20240417105605.836705-7-quic_varada@quicinc.com>
Date: Wed, 17 Apr 2024 16:26:04 +0530
From: Varadarajan Narayanan <quic_varada@...cinc.com>
To: <andersson@...nel.org>, <mturquette@...libre.com>, <sboyd@...nel.org>,
        <robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
        <konrad.dybcio@...aro.org>, <djakov@...nel.org>,
        <quic_varada@...cinc.com>, <dmitry.baryshkov@...aro.org>,
        <quic_anusha@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
        <linux-clk@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-pm@...r.kernel.org>
Subject: [PATCH v8 6/7] clk: qcom: ipq9574: Use icc-clk for enabling NoC related clocks

Use the icc-clk framework to enable few clocks to be able to
create paths and use the peripherals connected on those NoCs.

Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
---
v8: Bind clock and interconnect using master and slave ids
    Use indices instead of clock pointers
v7: Auto select INTERCONNECT & INTERCONNECT_CLK in COMMON_CLK_QCOM
    to address build break with random config build test, with the
    following combination

	CONFIG_COMMON_CLK_QCOM=y
		and
	CONFIG_INTERCONNECT_CLK=m

    the following error is seen as devm_icc_clk_register is in a
    module and being referenced from vmlinux.

	powerpc64-linux-ld: drivers/clk/qcom/common.o: in function `qcom_cc_really_probe':
	>> common.c:(.text+0x980): undefined reference to `devm_icc_clk_register'

v6: Move enum to dt-bindings and share between here and DT
    first_id -> icc_first_node_id
v5: Split from common.c changes into separate patch
    No functional changes
---
 drivers/clk/qcom/Kconfig       |  2 ++
 drivers/clk/qcom/gcc-ipq9574.c | 31 +++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)

diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index 8ab08e7b5b6c..b65a373f2e6b 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -17,6 +17,8 @@ menuconfig COMMON_CLK_QCOM
 	select RATIONAL
 	select REGMAP_MMIO
 	select RESET_CONTROLLER
+	select INTERCONNECT
+	select INTERCONNECT_CLK
 
 if COMMON_CLK_QCOM
 
diff --git a/drivers/clk/qcom/gcc-ipq9574.c b/drivers/clk/qcom/gcc-ipq9574.c
index 0a3f846695b8..7983e9ba0f35 100644
--- a/drivers/clk/qcom/gcc-ipq9574.c
+++ b/drivers/clk/qcom/gcc-ipq9574.c
@@ -4,6 +4,7 @@
  */
 
 #include <linux/clk-provider.h>
+#include <linux/interconnect-clk.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
@@ -12,6 +13,7 @@
 
 #include <dt-bindings/clock/qcom,ipq9574-gcc.h>
 #include <dt-bindings/reset/qcom,ipq9574-gcc.h>
+#include <dt-bindings/interconnect/qcom,ipq9574.h>
 
 #include "clk-alpha-pll.h"
 #include "clk-branch.h"
@@ -4301,6 +4303,32 @@ static const struct qcom_reset_map gcc_ipq9574_resets[] = {
 	[GCC_WCSS_Q6_TBU_BCR] = { 0x12054, 0 },
 };
 
+#define IPQ_APPS_ID			9574	/* some unique value */
+
+static struct qcom_icc_hws_data icc_ipq9574_hws[] = {
+	HWS_DATA(ANOC_PCIE0, GCC_ANOC_PCIE0_1LANE_M_CLK),
+	HWS_DATA(SNOC_PCIE0, GCC_SNOC_PCIE0_1LANE_S_CLK),
+	HWS_DATA(ANOC_PCIE1, GCC_ANOC_PCIE1_1LANE_M_CLK),
+	HWS_DATA(SNOC_PCIE1, GCC_SNOC_PCIE1_1LANE_S_CLK),
+	HWS_DATA(ANOC_PCIE2, GCC_ANOC_PCIE2_2LANE_M_CLK),
+	HWS_DATA(SNOC_PCIE2, GCC_SNOC_PCIE2_2LANE_S_CLK),
+	HWS_DATA(ANOC_PCIE3, GCC_ANOC_PCIE3_2LANE_M_CLK),
+	HWS_DATA(SNOC_PCIE3, GCC_SNOC_PCIE3_2LANE_S_CLK),
+	HWS_DATA(USB, GCC_SNOC_USB_CLK),
+	HWS_DATA(USB_AXI, GCC_ANOC_USB_AXI_CLK),
+	HWS_DATA(NSSNOC_NSSCC, GCC_NSSNOC_NSSCC_CLK),
+	HWS_DATA(NSSNOC_SNOC_0, GCC_NSSNOC_SNOC_CLK),
+	HWS_DATA(NSSNOC_SNOC_1, GCC_NSSNOC_SNOC_1_CLK),
+	HWS_DATA(NSSNOC_PCNOC_1, GCC_NSSNOC_PCNOC_1_CLK),
+	HWS_DATA(NSSNOC_QOSGEN_REF, GCC_NSSNOC_QOSGEN_REF_CLK),
+	HWS_DATA(NSSNOC_TIMEOUT_REF, GCC_NSSNOC_TIMEOUT_REF_CLK),
+	HWS_DATA(NSSNOC_XO_DCD, GCC_NSSNOC_XO_DCD_CLK),
+	HWS_DATA(NSSNOC_ATB, GCC_NSSNOC_ATB_CLK),
+	HWS_DATA(MEM_NOC_NSSNOC, GCC_MEM_NOC_NSSNOC_CLK),
+	HWS_DATA(NSSNOC_MEMNOC, GCC_NSSNOC_MEMNOC_CLK),
+	HWS_DATA(NSSNOC_MEM_NOC_1, GCC_NSSNOC_MEM_NOC_1_CLK),
+};
+
 static const struct of_device_id gcc_ipq9574_match_table[] = {
 	{ .compatible = "qcom,ipq9574-gcc" },
 	{ }
@@ -4323,6 +4351,9 @@ static const struct qcom_cc_desc gcc_ipq9574_desc = {
 	.num_resets = ARRAY_SIZE(gcc_ipq9574_resets),
 	.clk_hws = gcc_ipq9574_hws,
 	.num_clk_hws = ARRAY_SIZE(gcc_ipq9574_hws),
+	.icc_hws = icc_ipq9574_hws,
+	.num_icc_hws = ARRAY_SIZE(icc_ipq9574_hws),
+	.icc_first_node_id = IPQ_APPS_ID,
 };
 
 static int gcc_ipq9574_probe(struct platform_device *pdev)
-- 
2.34.1