Re: [PATCH v5 11/11] clk: Add KUnit tests for clks registered with struct clk_parent_data

David Gow
2024-06-13T07:56:22Z

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On Tue, 4 Jun 2024 at 06:38, Stephen Boyd <sboyd@kernel.org> wrote:
>
> Test that clks registered with 'struct clk_parent_data' work as
> intended and can find their parents.
>
> Cc: Christian Marangi <ansuelsmth@gmail.com>
> Cc: Brendan Higgins <brendan.higgins@linux.dev>
> Cc: David Gow <davidgow@google.com>
> Cc: Rae Moar <rmoar@google.com>
> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
> ---

This seems good to me overall, but will break if we can't compile the
dtbo.o file. Maybe these need to live behind a #if
IS_ENABLED(CONFIG_OF) or equivalent.

Also, there's a cast to kunit_action_t* which needs to use a wrapper.

Otherwise,
Reviewed-by: David Gow <davidgow@google.com>

Cheers,
-- David

> drivers/clk/Kconfig | 1 +
> drivers/clk/Makefile | 3 +-
> drivers/clk/clk_parent_data_test.h | 10 +
> drivers/clk/clk_test.c | 451 +++++++++++++++++++-
> drivers/clk/kunit_clk_parent_data_test.dtso | 28 ++
> 5 files changed, 491 insertions(+), 2 deletions(-)
> create mode 100644 drivers/clk/clk_parent_data_test.h
> create mode 100644 drivers/clk/kunit_clk_parent_data_test.dtso
>
> diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
> index f649f2a0279c..c33fdf9fdcd6 100644
> --- a/drivers/clk/Kconfig
> +++ b/drivers/clk/Kconfig
> @@ -508,6 +508,7 @@ config CLK_KUNIT_TEST
> tristate "Basic Clock Framework Kunit Tests" if !KUNIT_ALL_TESTS
> depends on KUNIT
> default KUNIT_ALL_TESTS
> + select OF_OVERLAY if OF
> help
> Kunit tests for the common clock framework.
>
> diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
> index 7b57e3d22cee..ed4e1a0e6943 100644
> --- a/drivers/clk/Makefile
> +++ b/drivers/clk/Makefile
> @@ -2,7 +2,8 @@
> # common clock types
> obj-$(CONFIG_HAVE_CLK) += clk-devres.o clk-bulk.o clkdev.o
> obj-$(CONFIG_COMMON_CLK) += clk.o
> -obj-$(CONFIG_CLK_KUNIT_TEST) += clk_test.o
> +obj-$(CONFIG_CLK_KUNIT_TEST) += clk_test.o \
> + kunit_clk_parent_data_test.dtbo.o

This breaks if CONFIG_OF isn't enabled, as there's no rule to compile it:
make[5]: *** No rule to make target
'drivers/clk/kunit_clk_parent_data_test.dtbo.o', needed by
'drivers/clk/modules.order'. Stop.

> obj-$(CONFIG_COMMON_CLK) += clk-divider.o
> obj-$(CONFIG_COMMON_CLK) += clk-fixed-factor.o
> obj-$(CONFIG_COMMON_CLK) += clk-fixed-rate.o
> diff --git a/drivers/clk/clk_parent_data_test.h b/drivers/clk/clk_parent_data_test.h
> new file mode 100644
> index 000000000000..eedd53ae910d
> --- /dev/null
> +++ b/drivers/clk/clk_parent_data_test.h
> @@ -0,0 +1,10 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +#ifndef _CLK_PARENT_DATA_TEST_H
> +#define _CLK_PARENT_DATA_TEST_H
> +
> +#define CLK_PARENT_DATA_1MHZ_NAME "1mhz_fixed_legacy"
> +#define CLK_PARENT_DATA_PARENT1 "parent_fwname"
> +#define CLK_PARENT_DATA_PARENT2 "50"
> +#define CLK_PARENT_DATA_50MHZ_NAME "50_clk"
> +
> +#endif
> diff --git a/drivers/clk/clk_test.c b/drivers/clk/clk_test.c
> index 39e2b5ff4f51..bdf3c4bb2243 100644
> --- a/drivers/clk/clk_test.c
> +++ b/drivers/clk/clk_test.c
> @@ -4,12 +4,19 @@
> */
> #include <linux/clk.h>
> #include <linux/clk-provider.h>
> +#include <linux/of.h>
> +#include <linux/platform_device.h>
>
> /* Needed for clk_hw_get_clk() */
> #include "clk.h"
>
> +#include <kunit/clk.h>
> +#include <kunit/of.h>
> +#include <kunit/platform_device.h>
> #include <kunit/test.h>
>
> +#include "clk_parent_data_test.h"
> +
> static const struct clk_ops empty_clk_ops = { };
>
> #define DUMMY_CLOCK_INIT_RATE (42 * 1000 * 1000)
> @@ -2659,6 +2666,446 @@ static struct kunit_suite clk_mux_no_reparent_test_suite = {
> .test_cases = clk_mux_no_reparent_test_cases,
> };
>
> +struct clk_register_clk_parent_data_test_case {
> + const char *desc;
> + struct clk_parent_data pdata;
> +};
> +
> +static void
> +clk_register_clk_parent_data_test_case_to_desc(
> + const struct clk_register_clk_parent_data_test_case *t, char *desc)
> +{
> + strcpy(desc, t->desc);
> +}
> +
> +static const struct clk_register_clk_parent_data_test_case
> +clk_register_clk_parent_data_of_cases[] = {
> + {
> + /*
> + * Test that a clk registered with a struct device_node can
> + * find a parent based on struct clk_parent_data::index.
> + */
> + .desc = "clk_parent_data_of_index_test",
> + .pdata.index = 0,
> + },
> + {
> + /*
> + * Test that a clk registered with a struct device_node can
> + * find a parent based on struct clk_parent_data::fwname.
> + */
> + .desc = "clk_parent_data_of_fwname_test",
> + .pdata.fw_name = CLK_PARENT_DATA_PARENT1,
> + },
> + {
> + /*
> + * Test that a clk registered with a struct device_node can
> + * find a parent based on struct clk_parent_data::name.
> + */
> + .desc = "clk_parent_data_of_name_test",
> + /* The index must be negative to indicate firmware not used */
> + .pdata.index = -1,
> + .pdata.name = CLK_PARENT_DATA_1MHZ_NAME,
> + },
> + {
> + /*
> + * Test that a clk registered with a struct device_node can
> + * find a parent based on struct
> + * clk_parent_data::{fw_name,name}.
> + */
> + .desc = "clk_parent_data_of_fwname_name_test",
> + .pdata.fw_name = CLK_PARENT_DATA_PARENT1,
> + .pdata.name = "not_matching",
> + },
> + {
> + /*
> + * Test that a clk registered with a struct device_node can
> + * find a parent based on struct clk_parent_data::{index,name}.
> + * Index takes priority.
> + */
> + .desc = "clk_parent_data_of_index_name_priority_test",
> + .pdata.index = 0,
> + .pdata.name = "not_matching",
> + },
> + {
> + /*
> + * Test that a clk registered with a struct device_node can
> + * find a parent based on struct
> + * clk_parent_data::{index,fwname,name}. The fw_name takes
> + * priority over index and name.
> + */
> + .desc = "clk_parent_data_of_index_fwname_name_priority_test",
> + .pdata.index = 1,
> + .pdata.fw_name = CLK_PARENT_DATA_PARENT1,
> + .pdata.name = "not_matching",
> + },
> +};
> +
> +KUNIT_ARRAY_PARAM(clk_register_clk_parent_data_of_test, clk_register_clk_parent_data_of_cases,
> + clk_register_clk_parent_data_test_case_to_desc)
> +
> +/**
> + * struct clk_register_clk_parent_data_of_ctx - Context for clk_parent_data OF tests
> + * @np: device node of clk under test
> + * @hw: clk_hw for clk under test
> + */
> +struct clk_register_clk_parent_data_of_ctx {
> + struct device_node *np;
> + struct clk_hw hw;
> +};
> +
> +static int clk_register_clk_parent_data_of_test_init(struct kunit *test)
> +{
> + struct clk_register_clk_parent_data_of_ctx *ctx;
> +
> + KUNIT_ASSERT_EQ(test, 0,
> + of_overlay_apply_kunit(test, kunit_clk_parent_data_test));
> +
> + ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
> + if (!ctx)
> + return -ENOMEM;
> + test->priv = ctx;
> +
> + ctx->np = of_find_compatible_node(NULL, NULL, "test,clk-parent-data");
> + if (!ctx->np)
> + return -ENODEV;
> +
> + return kunit_add_action_or_reset(test, (kunit_action_t *)&of_node_put, ctx->np);

We should use an action wrapper here (KUNIT_DEFINE_ACTION_WRAPPER()),
as casting function pointers to kunit_action_t* breaks control-flow
integrity.

> +}
> +
> +/*
> + * Test that a clk registered with a struct device_node can find a parent based on
> + * struct clk_parent_data when the hw member isn't set.
> + */
> +static void clk_register_clk_parent_data_of_test(struct kunit *test)
> +{
> + struct clk_register_clk_parent_data_of_ctx *ctx = test->priv;
> + struct clk_hw *parent_hw;
> + const struct clk_register_clk_parent_data_test_case *test_param;
> + struct clk_init_data init = { };
> + struct clk *expected_parent, *actual_parent;
> +
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->np);
> +
> + expected_parent = of_clk_get_kunit(test, ctx->np, 0);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, expected_parent);
> +
> + test_param = test->param_value;
> + init.parent_data = &test_param->pdata;
> + init.num_parents = 1;
> + init.name = "parent_data_of_test_clk";
> + init.ops = &clk_dummy_single_parent_ops;
> + ctx->hw.init = &init;
> + KUNIT_ASSERT_EQ(test, 0, of_clk_hw_register_kunit(test, ctx->np, &ctx->hw));
> +
> + parent_hw = clk_hw_get_parent(&ctx->hw);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent_hw);
> +
> + actual_parent = clk_hw_get_clk_kunit(test, parent_hw, __func__);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, actual_parent);
> +
> + KUNIT_EXPECT_TRUE(test, clk_is_match(expected_parent, actual_parent));
> +}
> +
> +static struct kunit_case clk_register_clk_parent_data_of_test_cases[] = {
> + KUNIT_CASE_PARAM(clk_register_clk_parent_data_of_test,
> + clk_register_clk_parent_data_of_test_gen_params),
> + {}
> +};
> +
> +/*
> + * Test suite for registering clks with struct clk_parent_data and a struct
> + * device_node.
> + */
> +static struct kunit_suite clk_register_clk_parent_data_of_suite = {
> + .name = "clk_register_clk_parent_data_of",
> + .init = clk_register_clk_parent_data_of_test_init,
> + .test_cases = clk_register_clk_parent_data_of_test_cases,
> +};
> +
> +/**
> + * struct clk_register_clk_parent_data_device_ctx - Context for clk_parent_data device tests
> + * @dev: device of clk under test
> + * @hw: clk_hw for clk under test
> + * @pdrv: driver to attach to find @dev
> + */
> +struct clk_register_clk_parent_data_device_ctx {
> + struct device *dev;
> + struct clk_hw hw;
> + struct platform_driver pdrv;
> +};
> +
> +static inline struct clk_register_clk_parent_data_device_ctx *
> +clk_register_clk_parent_data_driver_to_test_context(struct platform_device *pdev)
> +{
> + return container_of(to_platform_driver(pdev->dev.driver),
> + struct clk_register_clk_parent_data_device_ctx, pdrv);
> +}
> +
> +static int clk_register_clk_parent_data_device_probe(struct platform_device *pdev)
> +{
> + struct clk_register_clk_parent_data_device_ctx *ctx;
> +
> + ctx = clk_register_clk_parent_data_driver_to_test_context(pdev);
> + ctx->dev = &pdev->dev;
> +
> + return 0;
> +}
> +
> +static void clk_register_clk_parent_data_device_driver(struct kunit *test)
> +{
> + struct clk_register_clk_parent_data_device_ctx *ctx = test->priv;
> + static const struct of_device_id match_table[] = {
> + { .compatible = "test,clk-parent-data" },
> + { }
> + };
> +
> + ctx->pdrv.probe = clk_register_clk_parent_data_device_probe;
> + ctx->pdrv.driver.of_match_table = match_table;
> + ctx->pdrv.driver.name = __func__;
> + ctx->pdrv.driver.owner = THIS_MODULE;
> +
> + KUNIT_ASSERT_EQ(test, 0, kunit_platform_driver_register(test, &ctx->pdrv));
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->dev);
> +}
> +
> +static const struct clk_register_clk_parent_data_test_case
> +clk_register_clk_parent_data_device_cases[] = {
> + {
> + /*
> + * Test that a clk registered with a struct device can find a
> + * parent based on struct clk_parent_data::index.
> + */
> + .desc = "clk_parent_data_device_index_test",
> + .pdata.index = 1,
> + },
> + {
> + /*
> + * Test that a clk registered with a struct device can find a
> + * parent based on struct clk_parent_data::fwname.
> + */
> + .desc = "clk_parent_data_device_fwname_test",
> + .pdata.fw_name = CLK_PARENT_DATA_PARENT2,
> + },
> + {
> + /*
> + * Test that a clk registered with a struct device can find a
> + * parent based on struct clk_parent_data::name.
> + */
> + .desc = "clk_parent_data_device_name_test",
> + /* The index must be negative to indicate firmware not used */
> + .pdata.index = -1,
> + .pdata.name = CLK_PARENT_DATA_50MHZ_NAME,
> + },
> + {
> + /*
> + * Test that a clk registered with a struct device can find a
> + * parent based on struct clk_parent_data::{fw_name,name}.
> + */
> + .desc = "clk_parent_data_device_fwname_name_test",
> + .pdata.fw_name = CLK_PARENT_DATA_PARENT2,
> + .pdata.name = "not_matching",
> + },
> + {
> + /*
> + * Test that a clk registered with a struct device can find a
> + * parent based on struct clk_parent_data::{index,name}. Index
> + * takes priority.
> + */
> + .desc = "clk_parent_data_device_index_name_priority_test",
> + .pdata.index = 1,
> + .pdata.name = "not_matching",
> + },
> + {
> + /*
> + * Test that a clk registered with a struct device can find a
> + * parent based on struct clk_parent_data::{index,fwname,name}.
> + * The fw_name takes priority over index and name.
> + */
> + .desc = "clk_parent_data_device_index_fwname_name_priority_test",
> + .pdata.index = 0,
> + .pdata.fw_name = CLK_PARENT_DATA_PARENT2,
> + .pdata.name = "not_matching",
> + },
> +};
> +
> +KUNIT_ARRAY_PARAM(clk_register_clk_parent_data_device_test,
> + clk_register_clk_parent_data_device_cases,
> + clk_register_clk_parent_data_test_case_to_desc)
> +
> +/*
> + * Test that a clk registered with a struct device can find a parent based on
> + * struct clk_parent_data when the hw member isn't set.
> + */
> +static void clk_register_clk_parent_data_device_test(struct kunit *test)
> +{
> + struct clk_register_clk_parent_data_device_ctx *ctx;
> + const struct clk_register_clk_parent_data_test_case *test_param;
> + struct clk_hw *parent_hw;
> + struct clk_init_data init = { };
> + struct clk *expected_parent, *actual_parent;
> +
> + ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> + test->priv = ctx;
> +
> + clk_register_clk_parent_data_device_driver(test);
> +
> + expected_parent = clk_get_kunit(test, ctx->dev, "50");
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, expected_parent);
> +
> + test_param = test->param_value;
> + init.parent_data = &test_param->pdata;
> + init.num_parents = 1;
> + init.name = "parent_data_device_test_clk";
> + init.ops = &clk_dummy_single_parent_ops;
> + ctx->hw.init = &init;
> + KUNIT_ASSERT_EQ(test, 0, clk_hw_register_kunit(test, ctx->dev, &ctx->hw));
> +
> + parent_hw = clk_hw_get_parent(&ctx->hw);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent_hw);
> +
> + actual_parent = clk_hw_get_clk_kunit(test, parent_hw, __func__);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, actual_parent);
> +
> + KUNIT_EXPECT_TRUE(test, clk_is_match(expected_parent, actual_parent));
> +}
> +
> +static const struct clk_register_clk_parent_data_test_case
> +clk_register_clk_parent_data_device_hw_cases[] = {
> + {
> + /*
> + * Test that a clk registered with a struct device can find a
> + * parent based on struct clk_parent_data::hw.
> + */
> + .desc = "clk_parent_data_device_hw_index_test",
> + /* The index must be negative to indicate firmware not used */
> + .pdata.index = -1,
> + },
> + {
> + /*
> + * Test that a clk registered with a struct device can find a
> + * parent based on struct clk_parent_data::hw when
> + * struct clk_parent_data::fw_name is set.
> + */
> + .desc = "clk_parent_data_device_hw_fwname_test",
> + .pdata.fw_name = CLK_PARENT_DATA_PARENT2,
> + },
> + {
> + /*
> + * Test that a clk registered with a struct device can find a
> + * parent based on struct clk_parent_data::hw when struct
> + * clk_parent_data::name is set.
> + */
> + .desc = "clk_parent_data_device_hw_name_test",
> + /* The index must be negative to indicate firmware not used */
> + .pdata.index = -1,
> + .pdata.name = CLK_PARENT_DATA_50MHZ_NAME,
> + },
> + {
> + /*
> + * Test that a clk registered with a struct device can find a
> + * parent based on struct clk_parent_data::hw when struct
> + * clk_parent_data::{fw_name,name} are set.
> + */
> + .desc = "clk_parent_data_device_hw_fwname_name_test",
> + .pdata.fw_name = CLK_PARENT_DATA_PARENT2,
> + .pdata.name = "not_matching",
> + },
> + {
> + /*
> + * Test that a clk registered with a struct device can find a
> + * parent based on struct clk_parent_data::hw when struct
> + * clk_parent_data::index is set. The hw pointer takes
> + * priority.
> + */
> + .desc = "clk_parent_data_device_hw_index_priority_test",
> + .pdata.index = 0,
> + },
> + {
> + /*
> + * Test that a clk registered with a struct device can find a
> + * parent based on struct clk_parent_data::hw when
> + * struct clk_parent_data::{index,fwname,name} are set.
> + * The hw pointer takes priority over everything else.
> + */
> + .desc = "clk_parent_data_device_hw_index_fwname_name_priority_test",
> + .pdata.index = 0,
> + .pdata.fw_name = CLK_PARENT_DATA_PARENT2,
> + .pdata.name = "not_matching",
> + },
> +};
> +
> +KUNIT_ARRAY_PARAM(clk_register_clk_parent_data_device_hw_test,
> + clk_register_clk_parent_data_device_hw_cases,
> + clk_register_clk_parent_data_test_case_to_desc)
> +
> +/*
> + * Test that a clk registered with a struct device can find a
> + * parent based on struct clk_parent_data::hw.
> + */
> +static void clk_register_clk_parent_data_device_hw_test(struct kunit *test)
> +{
> + struct clk_register_clk_parent_data_device_ctx *ctx;
> + const struct clk_register_clk_parent_data_test_case *test_param;
> + struct clk_dummy_context *parent;
> + struct clk_hw *parent_hw;
> + struct clk_parent_data pdata = { };
> + struct clk_init_data init = { };
> +
> + ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> + test->priv = ctx;
> +
> + clk_register_clk_parent_data_device_driver(test);
> +
> + parent = kunit_kzalloc(test, sizeof(*parent), GFP_KERNEL);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
> +
> + parent_hw = &parent->hw;
> + parent_hw->init = CLK_HW_INIT_NO_PARENT("parenlookst-clk",
> + &clk_dummy_rate_ops, 0);
> +
> + KUNIT_ASSERT_EQ(test, 0, clk_hw_register_kunit(test, ctx->dev, parent_hw));
> +
> + test_param = test->param_value;
> + memcpy(&pdata, &test_param->pdata, sizeof(pdata));
> + pdata.hw = parent_hw;
> + init.parent_data = &pdata;
> + init.num_parents = 1;
> + init.ops = &clk_dummy_single_parent_ops;
> + init.name = "parent_data_device_hw_test_clk";
> + ctx->hw.init = &init;
> + KUNIT_ASSERT_EQ(test, 0, clk_hw_register_kunit(test, ctx->dev, &ctx->hw));
> +
> + KUNIT_EXPECT_PTR_EQ(test, parent_hw, clk_hw_get_parent(&ctx->hw));
> +}
> +
> +static struct kunit_case clk_register_clk_parent_data_device_test_cases[] = {
> + KUNIT_CASE_PARAM(clk_register_clk_parent_data_device_test,
> + clk_register_clk_parent_data_device_test_gen_params),
> + KUNIT_CASE_PARAM(clk_register_clk_parent_data_device_hw_test,
> + clk_register_clk_parent_data_device_hw_test_gen_params),
> + {}
> +};
> +
> +static int clk_register_clk_parent_data_device_init(struct kunit *test)
> +{
> + KUNIT_ASSERT_EQ(test, 0,
> + of_overlay_apply_kunit(test, kunit_clk_parent_data_test));
> +
> + return 0;
> +}
> +
> +/*
> + * Test suite for registering clks with struct clk_parent_data and a struct
> + * device.
> + */
> +static struct kunit_suite clk_register_clk_parent_data_device_suite = {
> + .name = "clk_register_clk_parent_data_device",
> + .init = clk_register_clk_parent_data_device_init,
> + .test_cases = clk_register_clk_parent_data_device_test_cases,
> +};
> +
> kunit_test_suites(
> &clk_leaf_mux_set_rate_parent_test_suite,
> &clk_test_suite,
> @@ -2671,7 +3118,9 @@ kunit_test_suites(
> &clk_range_test_suite,
> &clk_range_maximize_test_suite,
> &clk_range_minimize_test_suite,
> + &clk_register_clk_parent_data_of_suite,
> + &clk_register_clk_parent_data_device_suite,
> &clk_single_parent_mux_test_suite,
> - &clk_uncached_test_suite
> + &clk_uncached_test_suite,
> );
> MODULE_LICENSE("GPL v2");
> diff --git a/drivers/clk/kunit_clk_parent_data_test.dtso b/drivers/clk/kunit_clk_parent_data_test.dtso
> new file mode 100644
> index 000000000000..7d3ed9a5a2e8
> --- /dev/null
> +++ b/drivers/clk/kunit_clk_parent_data_test.dtso
> @@ -0,0 +1,28 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/dts-v1/;
> +/plugin/;
> +
> +#include "clk_parent_data_test.h"
> +
> +&{/} {
> + fixed_50: kunit-clock-50MHz {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <50000000>;
> + clock-output-names = CLK_PARENT_DATA_50MHZ_NAME;
> + };
> +
> + fixed_parent: kunit-clock-1MHz {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <1000000>;
> + clock-output-names = CLK_PARENT_DATA_1MHZ_NAME;
> + };
> +
> + kunit-clock-controller {
> + compatible = "test,clk-parent-data";
> + clocks = <&fixed_parent>, <&fixed_50>;
> + clock-names = CLK_PARENT_DATA_PARENT1, CLK_PARENT_DATA_PARENT2;
> + #clock-cells = <1>;
> + };
> +};
> --
> https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git/
> https://git.kernel.org/pub/scm/linux/kernel/git/sboyd/spmi.git
>

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