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Mon, 26 Aug 2024 23:46:15 -0700 (PDT) Date: Mon, 26 Aug 2024 23:45:28 -0700 In-Reply-To: <20240827064529.1246786-1-tavip@google.com> Mime-Version: 1.0 References: <20240827064529.1246786-1-tavip@google.com> X-Mailer: git-send-email 2.46.0.295.g3b9ea8a38a-goog Message-ID: <20240827064529.1246786-25-tavip@google.com> Subject: [RFC PATCH v3 24/24] test/unit: add unit tests for RT500's clock controller From: Octavian Purdila To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, stefanst@google.com, pbonzini@redhat.com, peter.maydell@linaro.org, marcandre.lureau@redhat.com, berrange@redhat.com, eduardo@habkost.net, luc@lmichel.fr, damien.hedde@dahe.fr, alistair@alistair23.me, thuth@redhat.com, philmd@linaro.org, jsnow@redhat.com, crosa@redhat.com, lvivier@redhat.com Received-SPF: pass client-ip=2607:f8b0:4864:20::54a; envelope-from=3N3bNZgUKCpYJ0L8F6EE6B4.2ECG4CK-34L4BDED6DK.EH6@flex--tavip.bounces.google.com; helo=mail-pg1-x54a.google.com X-Spam_score_int: -95 X-Spam_score: -9.6 X-Spam_bar: --------- X-Spam_report: (-9.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01, USER_IN_DEF_DKIM_WL=-7.5 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Add test to exercise clocks set and clear, system PLL initialization, audio PLL initialization, systick and ostimer clock source selection. Signed-off-by: Octavian Purdila --- tests/qtest/rt500-clkctl-test.c | 195 ++++++++++++++++++++++++++++++++ tests/qtest/meson.build | 1 + 2 files changed, 196 insertions(+) create mode 100644 tests/qtest/rt500-clkctl-test.c diff --git a/tests/qtest/rt500-clkctl-test.c b/tests/qtest/rt500-clkctl-test.c new file mode 100644 index 0000000000..d5b83d81da --- /dev/null +++ b/tests/qtest/rt500-clkctl-test.c @@ -0,0 +1,195 @@ +/* + * Copyright (c) 2024 Google LLC + * + * SPDX-License-Identifier: GPL-2.0-or-later + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "qemu/log.h" +#include "qemu/module.h" +#include "qemu/main-loop.h" +#include "exec/memory.h" +#include "hw/clock.h" +#include "hw/irq.h" +#include "hw/qdev-clock.h" +#include "hw/qdev-properties.h" + +#include "hw/misc/rt500_clkctl0.h" +#include "hw/misc/rt500_clkctl1.h" +#include "hw/misc/rt500_clk_freqs.h" +#include "hw/arm/svd/rt500.h" +#include "reg-utils.h" + +#define SYSCLK_HZ 200000000 +#define CLKCTL0_NAME "/machine/soc/clkctl0" +#define CLKCTL1_NAME "/machine/soc/clkctl1" + +static void pscctl_test(gconstpointer user_data) +{ + /* rom controller clock should be enabled at reset */ + g_assert(REG32_READ_FIELD(RT500_CLKCTL0, PSCCTL0, ROM_CTRLR_CLK) == 1); + + /* DSP clk is disabled at reset */ + g_assert(REG32_READ_FIELD(RT500_CLKCTL0, PSCCTL0, DSP_CLK) == 0); + + /* check PSCTL_SET functionality */ + REG32_WRITE_FIELD_NOUPDATE(RT500_CLKCTL0, PSCCTL0_SET, DSP_CLK, 1); + g_assert(REG32_READ_FIELD(RT500_CLKCTL0, PSCCTL0, DSP_CLK) == 1); + + /* check PSCTL_CLR functionality */ + REG32_WRITE_FIELD_NOUPDATE(RT500_CLKCTL0, PSCCTL0_CLR, DSP_CLK, 1); + g_assert(REG32_READ_FIELD(RT500_CLKCTL0, PSCCTL0, DSP_CLK) == 0); + + /* FLEXIO clk is disabled at reset */ + g_assert(REG32_READ_FIELD(RT500_CLKCTL1, PSCCTL0, FlexIO) == 0); + + /* check PSCTL_SET functionality */ + REG32_WRITE_FIELD_NOUPDATE(RT500_CLKCTL1, PSCCTL0_SET, FlexIO, 1); + g_assert(REG32_READ_FIELD(RT500_CLKCTL1, PSCCTL0, FlexIO) == 1); + + /* check PSCTL_CLR functionality */ + REG32_WRITE_FIELD_NOUPDATE(RT500_CLKCTL1, PSCCTL0_CLR, FlexIO, 1); + g_assert(REG32_READ_FIELD(RT500_CLKCTL1, PSCCTL0, FlexIO) == 0); +} + +static void audiopll0pfd_test(gconstpointer user_data) +{ + /* audio plls are gated at boot */ + g_assert(REG32_READ_FIELD(RT500_CLKCTL1, AUDIOPLL0PFD, PFD3_CLKGATE) == 1); + g_assert(REG32_READ_FIELD(RT500_CLKCTL1, AUDIOPLL0PFD, PFD2_CLKGATE) == 1); + g_assert(REG32_READ_FIELD(RT500_CLKCTL1, AUDIOPLL0PFD, PFD1_CLKGATE) == 1); + g_assert(REG32_READ_FIELD(RT500_CLKCTL1, AUDIOPLL0PFD, PFD0_CLKGATE) == 1); + + /* ,,, and clocks are not ready */ + g_assert(REG32_READ_FIELD(RT500_CLKCTL1, AUDIOPLL0PFD, PFD3_CLKRDY) == 0); + g_assert(REG32_READ_FIELD(RT500_CLKCTL1, AUDIOPLL0PFD, PFD2_CLKRDY) == 0); + g_assert(REG32_READ_FIELD(RT500_CLKCTL1, AUDIOPLL0PFD, PFD1_CLKRDY) == 0); + g_assert(REG32_READ_FIELD(RT500_CLKCTL1, AUDIOPLL0PFD, PFD0_CLKRDY) == 0); + + /* ungate all plls and check that clocks are ready */ + REG32_WRITE_FIELD(RT500_CLKCTL1, AUDIOPLL0PFD, PFD3_CLKGATE, 0); + REG32_WRITE_FIELD(RT500_CLKCTL1, AUDIOPLL0PFD, PFD2_CLKGATE, 0); + REG32_WRITE_FIELD(RT500_CLKCTL1, AUDIOPLL0PFD, PFD1_CLKGATE, 0); + REG32_WRITE_FIELD(RT500_CLKCTL1, AUDIOPLL0PFD, PFD0_CLKGATE, 0); + + g_assert(REG32_READ_FIELD(RT500_CLKCTL1, AUDIOPLL0PFD, PFD3_CLKRDY) == 1); + g_assert(REG32_READ_FIELD(RT500_CLKCTL1, AUDIOPLL0PFD, PFD2_CLKRDY) == 1); + g_assert(REG32_READ_FIELD(RT500_CLKCTL1, AUDIOPLL0PFD, PFD1_CLKRDY) == 1); + g_assert(REG32_READ_FIELD(RT500_CLKCTL1, AUDIOPLL0PFD, PFD0_CLKRDY) == 1); +} + +static void syspll0pfd_test(gconstpointer user_data) +{ + /* system plls are gated at boot */ + g_assert(REG32_READ_FIELD(RT500_CLKCTL0, SYSPLL0PFD, PFD3_CLKGATE) == 1); + g_assert(REG32_READ_FIELD(RT500_CLKCTL0, SYSPLL0PFD, PFD2_CLKGATE) == 1); + g_assert(REG32_READ_FIELD(RT500_CLKCTL0, SYSPLL0PFD, PFD1_CLKGATE) == 1); + g_assert(REG32_READ_FIELD(RT500_CLKCTL0, SYSPLL0PFD, PFD0_CLKGATE) == 1); + + /* ,,, and clocks are not ready */ + g_assert(REG32_READ_FIELD(RT500_CLKCTL0, SYSPLL0PFD, PFD3_CLKRDY) == 0); + g_assert(REG32_READ_FIELD(RT500_CLKCTL0, SYSPLL0PFD, PFD2_CLKRDY) == 0); + g_assert(REG32_READ_FIELD(RT500_CLKCTL0, SYSPLL0PFD, PFD1_CLKRDY) == 0); + g_assert(REG32_READ_FIELD(RT500_CLKCTL0, SYSPLL0PFD, PFD0_CLKRDY) == 0); + + /* ungate all plls and check that clocks are ready */ + REG32_WRITE_FIELD(RT500_CLKCTL0, SYSPLL0PFD, PFD3_CLKGATE, 0); + REG32_WRITE_FIELD(RT500_CLKCTL0, SYSPLL0PFD, PFD2_CLKGATE, 0); + REG32_WRITE_FIELD(RT500_CLKCTL0, SYSPLL0PFD, PFD1_CLKGATE, 0); + REG32_WRITE_FIELD(RT500_CLKCTL0, SYSPLL0PFD, PFD0_CLKGATE, 0); + + g_assert(REG32_READ_FIELD(RT500_CLKCTL0, SYSPLL0PFD, PFD3_CLKRDY) == 1); + g_assert(REG32_READ_FIELD(RT500_CLKCTL0, SYSPLL0PFD, PFD2_CLKRDY) == 1); + g_assert(REG32_READ_FIELD(RT500_CLKCTL0, SYSPLL0PFD, PFD1_CLKRDY) == 1); + g_assert(REG32_READ_FIELD(RT500_CLKCTL0, SYSPLL0PFD, PFD0_CLKRDY) == 1); +} + +static void systick_clk_test(gconstpointer user_data) +{ + /* systick is not running at reset */ + g_assert_cmpuint(dev_clock_out_get_hz(CLKCTL0_NAME, "systick_clk"), ==, 0); + + /* select divout no divisor */ + REG32_WRITE_FIELD(RT500_CLKCTL0, SYSTICKFCLKSEL, SEL, + SYSTICKFCLKSEL_DIVOUT); + g_assert_cmpuint(dev_clock_out_get_hz(CLKCTL0_NAME, "systick_clk"), + ==, SYSCLK_HZ); + + /* change divisor to 2 */ + REG32_WRITE_FIELD(RT500_CLKCTL0, SYSTICKFCLKDIV, DIV, 1); + g_assert_cmpuint(dev_clock_out_get_hz(CLKCTL0_NAME, "systick_clk"), + ==, SYSCLK_HZ / 2); + + /* select lpsoc */ + REG32_WRITE_FIELD(RT500_CLKCTL0, SYSTICKFCLKSEL, SEL, + SYSTICKFCLKSEL_LPOSC); + g_assert_cmpuint(dev_clock_out_get_hz(CLKCTL0_NAME, "systick_clk"), + ==, LPOSC_CLK_HZ); + + /* select lpsoc */ + REG32_WRITE_FIELD(RT500_CLKCTL0, SYSTICKFCLKSEL, SEL, + SYSTICKFCLKSEL_32KHZRTC); + g_assert_cmpuint(dev_clock_out_get_hz(CLKCTL0_NAME, "systick_clk"), + ==, RTC32KHZ_CLK_HZ); + + /* disable clock */ + REG32_WRITE_FIELD(RT500_CLKCTL0, SYSTICKFCLKSEL, SEL, + SYSTICKFCLKSEL_NONE); + g_assert_cmpuint(dev_clock_out_get_hz(CLKCTL0_NAME, "systick_clk"), + ==, 0); +} + +static void ostimer_clk_test(gconstpointer user_data) +{ + /* systick is not running at reset */ + g_assert_cmpuint(dev_clock_out_get_hz(CLKCTL1_NAME, "ostimer_clk"), ==, 0); + + /* select lpsoc */ + REG32_WRITE_FIELD(RT500_CLKCTL1, OSEVENTTFCLKSEL, SEL, + OSEVENTTFCLKSEL_LPOSC); + g_assert_cmpuint(dev_clock_out_get_hz(CLKCTL1_NAME, "ostimer_clk"), ==, + LPOSC_CLK_HZ); + + /* select 32khz RTC */ + REG32_WRITE_FIELD(RT500_CLKCTL1, OSEVENTTFCLKSEL, SEL, + OSEVENTTFCLKSEL_32KHZRTC); + g_assert_cmpuint(dev_clock_out_get_hz(CLKCTL1_NAME, "ostimer_clk"), ==, + RTC32KHZ_CLK_HZ); + + /* select hclk */ + REG32_WRITE_FIELD(RT500_CLKCTL1, OSEVENTTFCLKSEL, SEL, + OSEVENTTFCLKSEL_HCLK); + g_assert_cmpuint(dev_clock_out_get_hz(CLKCTL1_NAME, "ostimer_clk"), ==, + SYSCLK_HZ); + + /* disable clock */ + REG32_WRITE_FIELD(RT500_CLKCTL1, OSEVENTTFCLKSEL, SEL, + OSEVENTTFCLKSEL_NONE); + g_assert_cmpuint(dev_clock_out_get_hz(CLKCTL1_NAME, "ostimer_clk"), ==, 0); +} + +int main(int argc, char **argv) +{ + int ret; + + g_test_init(&argc, &argv, NULL); + + qtest_add_data_func("/rt500-clkctl/pscctl-test", NULL, pscctl_test); + qtest_add_data_func("/rt500-clkctl/syspll0pfd-test", NULL, + syspll0pfd_test); + qtest_add_data_func("/rt500-clkctl/audiopll0pfd-test", NULL, + audiopll0pfd_test); + g_test_add_data_func("/rt500-clkctl/systick-test", NULL, + systick_clk_test); + g_test_add_data_func("/rt500-clkctl/ostimer-clk-test", NULL, + ostimer_clk_test); + + qtest_start("-M rt595-evk"); + ret = g_test_run(); + qtest_end(); + + return ret; +} diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build index 7df88edeab..fa463251d6 100644 --- a/tests/qtest/meson.build +++ b/tests/qtest/meson.build @@ -230,6 +230,7 @@ qtests_arm = \ (config_all_devices.has_key('CONFIG_STM32L4X5_SOC') and config_all_devices.has_key('CONFIG_DM163')? ['dm163-test'] : []) + \ (config_all_devices.has_key('CONFIG_FLEXCOMM') ? ['flexcomm-test', 'flexcomm-usart-test', 'flexcomm-i2c-test', 'flexcomm-spi-test'] : []) + \ + (config_all_devices.has_key('CONFIG_RT500_CLKCTL') ? ['rt500-clkctl-test'] : []) + \ ['arm-cpu-features', 'boot-serial-test']