diff options
| author | Georgi Djakov <djakov@kernel.org> | 2023-06-10 10:43:20 +0300 |
|---|---|---|
| committer | Georgi Djakov <djakov@kernel.org> | 2023-06-10 10:43:20 +0300 |
| commit | 7f1ed4659bad2dbb0627e0df8933b1cd651e0137 (patch) | |
| tree | 9db45594f3a76a54a46a7fabf2e2abf431914cb4 /include | |
| parent | 4396f5fc6d032388012a4772278975210398f525 (diff) | |
| parent | a1f7e72178475e0e0d90cd89ef7457b6c69c50ec (diff) | |
Merge branch 'icc-cbf' into icc-next
On MSM8996 two CPU clusters are interconnected using the Core Bus
Fabric (CBF). In order for the CPU clusters to function properly, it
should be clocked following the core's frequencies to provide adequate
bandwidth.
Register CBF as a clock (required for CPU to boot) and add a tiny
interconnect layer on top of it to let cpufreq/opp scale the CBF clock.
* icc-cbf
dt-bindings: interconnect/msm8996-cbf: add defines to be used by CBF
interconnect: add clk-based icc provider support
clk: qcom: cbf-msm8996: scale CBF clock according to the CPUfreq
interconnect: icc-clk: fix modular build
Link: https://lore.kernel.org/r/20230512001334.2983048-1-dmitry.baryshkov@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/dt-bindings/interconnect/qcom,msm8996-cbf.h | 12 | ||||
| -rw-r--r-- | include/linux/interconnect-clk.h | 22 |
2 files changed, 34 insertions, 0 deletions
diff --git a/include/dt-bindings/interconnect/qcom,msm8996-cbf.h b/include/dt-bindings/interconnect/qcom,msm8996-cbf.h new file mode 100644 index 000000000000..aac5e69f6bd5 --- /dev/null +++ b/include/dt-bindings/interconnect/qcom,msm8996-cbf.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ +/* + * Copyright (C) 2023 Linaro Ltd. All rights reserved. + */ + +#ifndef __DT_BINDINGS_INTERCONNECT_QCOM_MSM8996_CBF_H +#define __DT_BINDINGS_INTERCONNECT_QCOM_MSM8996_CBF_H + +#define MASTER_CBF_M4M 0 +#define SLAVE_CBF_M4M 1 + +#endif diff --git a/include/linux/interconnect-clk.h b/include/linux/interconnect-clk.h new file mode 100644 index 000000000000..0cd80112bea5 --- /dev/null +++ b/include/linux/interconnect-clk.h @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2023, Linaro Ltd. + */ + +#ifndef __LINUX_INTERCONNECT_CLK_H +#define __LINUX_INTERCONNECT_CLK_H + +struct device; + +struct icc_clk_data { + struct clk *clk; + const char *name; +}; + +struct icc_provider *icc_clk_register(struct device *dev, + unsigned int first_id, + unsigned int num_clocks, + const struct icc_clk_data *data); +void icc_clk_unregister(struct icc_provider *provider); + +#endif |