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-rw-r--r--test/dm/Makefile3
-rw-r--r--test/dm/k210_pll.c96
-rw-r--r--test/dm/simple-pm-bus.c45
-rw-r--r--test/dm/syscon-reset.c59
4 files changed, 203 insertions, 0 deletions
diff --git a/test/dm/Makefile b/test/dm/Makefile
index 6c18fd04ce1..0d1c66fa1e6 100644
--- a/test/dm/Makefile
+++ b/test/dm/Makefile
@@ -73,4 +73,7 @@ obj-$(CONFIG_DMA) += dma.o
obj-$(CONFIG_DM_MDIO) += mdio.o
obj-$(CONFIG_DM_MDIO_MUX) += mdio_mux.o
obj-$(CONFIG_DM_RNG) += rng.o
+obj-$(CONFIG_CLK_K210_SET_RATE) += k210_pll.o
+obj-$(CONFIG_SIMPLE_PM_BUS) += simple-pm-bus.o
+obj-$(CONFIG_RESET_SYSCON) += syscon-reset.o
endif
diff --git a/test/dm/k210_pll.c b/test/dm/k210_pll.c
new file mode 100644
index 00000000000..54764f269c5
--- /dev/null
+++ b/test/dm/k210_pll.c
@@ -0,0 +1,96 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020 Sean Anderson <seanga2@gmail.com>
+ */
+
+#include <common.h>
+/* For DIV_ROUND_DOWN_ULL, defined in linux/kernel.h */
+#include <div64.h>
+#include <dm/test.h>
+#include <kendryte/pll.h>
+#include <test/ut.h>
+
+static int dm_test_k210_pll_calc_config(u32 rate, u32 rate_in,
+ struct k210_pll_config *best)
+{
+ u64 f, r, od, max_r, inv_ratio;
+ s64 error, best_error;
+
+ best_error = S64_MAX;
+ error = best_error;
+ max_r = min(16ULL, DIV_ROUND_DOWN_ULL(rate_in, 13300000));
+ inv_ratio = DIV_ROUND_CLOSEST_ULL((u64)rate_in << 32, rate);
+
+ /* Brute force it */
+ for (r = 1; r <= max_r; r++) {
+ for (f = 1; f <= 64; f++) {
+ for (od = 1; od <= 16; od++) {
+ u64 vco = DIV_ROUND_CLOSEST_ULL(rate_in * f, r);
+
+ if (vco > 1750000000 || vco < 340000000)
+ continue;
+
+ error = DIV_ROUND_CLOSEST_ULL(f * inv_ratio,
+ r * od);
+ /* The lower 16 bits are spurious */
+ error = abs((error - BIT(32))) >> 16;
+ if (error < best_error) {
+ best->r = r;
+ best->f = f;
+ best->od = od;
+ best_error = error;
+ }
+ }
+ }
+ }
+
+ if (best_error == S64_MAX)
+ return -EINVAL;
+ return 0;
+}
+
+static int dm_test_k210_pll_compare(struct k210_pll_config *ours,
+ struct k210_pll_config *theirs)
+{
+ return (u32)ours->f * theirs->r * theirs->od !=
+ (u32)theirs->f * ours->r * ours->od;
+}
+
+static int dm_test_k210_pll(struct unit_test_state *uts)
+{
+ struct k210_pll_config ours, theirs;
+
+ /* General range checks */
+ ut_asserteq(-EINVAL, k210_pll_calc_config(0, 26000000, &theirs));
+ ut_asserteq(-EINVAL, k210_pll_calc_config(390000000, 0, &theirs));
+ ut_asserteq(-EINVAL, k210_pll_calc_config(2000000000, 26000000,
+ &theirs));
+ ut_asserteq(-EINVAL, k210_pll_calc_config(390000000, 2000000000,
+ &theirs));
+ ut_asserteq(-EINVAL, k210_pll_calc_config(1500000000, 20000000,
+ &theirs));
+
+ /* Verify we get the same output with brute-force */
+ ut_assertok(dm_test_k210_pll_calc_config(390000000, 26000000, &ours));
+ ut_assertok(k210_pll_calc_config(390000000, 26000000, &theirs));
+ ut_assertok(dm_test_k210_pll_compare(&ours, &theirs));
+
+ ut_assertok(dm_test_k210_pll_calc_config(26000000, 390000000, &ours));
+ ut_assertok(k210_pll_calc_config(26000000, 390000000, &theirs));
+ ut_assertok(dm_test_k210_pll_compare(&ours, &theirs));
+
+ ut_assertok(dm_test_k210_pll_calc_config(400000000, 26000000, &ours));
+ ut_assertok(k210_pll_calc_config(400000000, 26000000, &theirs));
+ ut_assertok(dm_test_k210_pll_compare(&ours, &theirs));
+
+ ut_assertok(dm_test_k210_pll_calc_config(27000000, 26000000, &ours));
+ ut_assertok(k210_pll_calc_config(27000000, 26000000, &theirs));
+ ut_assertok(dm_test_k210_pll_compare(&ours, &theirs));
+
+ ut_assertok(dm_test_k210_pll_calc_config(26000000, 27000000, &ours));
+ ut_assertok(k210_pll_calc_config(26000000, 27000000, &theirs));
+ ut_assertok(dm_test_k210_pll_compare(&ours, &theirs));
+
+ return 0;
+}
+DM_TEST(dm_test_k210_pll, 0);
diff --git a/test/dm/simple-pm-bus.c b/test/dm/simple-pm-bus.c
new file mode 100644
index 00000000000..978c7f191e7
--- /dev/null
+++ b/test/dm/simple-pm-bus.c
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020 Sean Anderson <seanga2@gmail.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dm/test.h>
+#include <dm/device-internal.h>
+#include <test/ut.h>
+#include <asm/clk.h>
+#include <asm/power-domain.h>
+
+/* These must match the ids in the device tree */
+#define TEST_CLOCK_ID 4
+#define TEST_POWER_ID 1
+
+static int dm_test_simple_pm_bus(struct unit_test_state *uts)
+{
+ struct udevice *power;
+ struct udevice *clock;
+ struct udevice *bus;
+
+ ut_assertok(uclass_get_device_by_name(UCLASS_POWER_DOMAIN,
+ "power-domain", &power));
+ ut_assertok(uclass_get_device_by_name(UCLASS_CLK, "clk-sbox",
+ &clock));
+ ut_asserteq(0, sandbox_power_domain_query(power, TEST_POWER_ID));
+ ut_asserteq(0, sandbox_clk_query_enable(clock, TEST_CLOCK_ID));
+
+ ut_assertok(uclass_get_device_by_name(UCLASS_SIMPLE_BUS, "pm-bus-test",
+ &bus));
+ ut_asserteq(1, sandbox_power_domain_query(power, TEST_POWER_ID));
+ ut_asserteq(1, sandbox_clk_query_enable(clock, TEST_CLOCK_ID));
+
+ ut_assertok(device_remove(bus, DM_REMOVE_NORMAL));
+ /* must re-probe since device_remove also removes the power domain */
+ ut_assertok(uclass_get_device_by_name(UCLASS_POWER_DOMAIN,
+ "power-domain", &power));
+ ut_asserteq(0, sandbox_power_domain_query(power, TEST_POWER_ID));
+ ut_asserteq(0, sandbox_clk_query_enable(clock, TEST_CLOCK_ID));
+
+ return 0;
+}
+DM_TEST(dm_test_simple_pm_bus, DM_TESTF_SCAN_FDT);
diff --git a/test/dm/syscon-reset.c b/test/dm/syscon-reset.c
new file mode 100644
index 00000000000..edabdb2e781
--- /dev/null
+++ b/test/dm/syscon-reset.c
@@ -0,0 +1,59 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020 Sean Anderson <seanga2@gmail.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dm/test.h>
+#include <regmap.h>
+#include <reset.h>
+#include <syscon.h>
+#include <test/ut.h>
+#include <asm/test.h>
+#include <linux/bitops.h>
+
+/* The following values must match the device tree */
+#define TEST_RESET_REG 1
+#define TEST_RESET_ASSERT_HIGH 0
+#define TEST_RESET_ASSERT (TEST_RESET_ASSERT_HIGH ? (u32)-1 : (u32)0)
+#define TEST_RESET_DEASSERT (~TEST_RESET_ASSERT)
+
+#define TEST_RESET_VALID 15
+#define TEST_RESET_NOMASK 30
+#define TEST_RESET_OUTOFRANGE 60
+
+static int dm_test_syscon_reset(struct unit_test_state *uts)
+{
+ struct regmap *map;
+ struct reset_ctl rst;
+ struct udevice *reset;
+ struct udevice *syscon;
+ struct udevice *syscon_reset;
+ uint reg;
+
+ ut_assertok(uclass_get_device_by_name(UCLASS_MISC, "syscon-reset-test",
+ &reset));
+ ut_assertok(uclass_get_device_by_name(UCLASS_SYSCON, "syscon@0",
+ &syscon));
+ ut_assertok(uclass_get_device_by_name(UCLASS_RESET, "syscon-reset",
+ &syscon_reset));
+ ut_assertok_ptr((map = syscon_get_regmap(syscon)));
+
+ ut_asserteq(-EINVAL, reset_get_by_name(reset, "no_mask", &rst));
+ ut_asserteq(-EINVAL, reset_get_by_name(reset, "out_of_range", &rst));
+ ut_assertok(reset_get_by_name(reset, "valid", &rst));
+
+ sandbox_set_enable_memio(true);
+ ut_assertok(regmap_write(map, TEST_RESET_REG, TEST_RESET_DEASSERT));
+ ut_assertok(reset_assert(&rst));
+ ut_assertok(regmap_read(map, TEST_RESET_REG, &reg));
+ ut_asserteq(TEST_RESET_DEASSERT ^ BIT(TEST_RESET_VALID), reg);
+
+ ut_assertok(reset_deassert(&rst));
+ ut_assertok(regmap_read(map, TEST_RESET_REG, &reg));
+ ut_asserteq(TEST_RESET_DEASSERT, reg);
+
+ return 0;
+}
+DM_TEST(dm_test_syscon_reset, DM_TESTF_SCAN_FDT);
generated by cgit v1.2.3 (git 2.0.4) at 2025-10-17 19:29:32 +0000