kernel/linux.git/drivers/memory/stm32_omm.c, branch v6.19.11

memory: stm32_omm: Fix req2ack update test

2025-08-11T12:53:13+00:00

If "st,omm-req2ack-ns" property is found and its value is not 0, the current test doesn't allow to compute and set req2ack value, Fix this test. Fixes: 8181d061dcff ("memory: Add STM32 Octo Memory Manager driver") Signed-off-by: Patrice Chotard Link: https://lore.kernel.org/r/20250807-upstream_omm_fix_req2ack_test_condition-v2-1-d7df4af2b48b@foss.st.com Cc: Signed-off-by: Krzysztof Kozlowski

memory: stm32_omm: Use syscon_regmap_lookup_by_phandle_args

2025-06-10T08:13:27+00:00

Use syscon_regmap_lookup_by_phandle_args() which is a wrapper over syscon_regmap_lookup_by_phandle() combined with getting the syscon argument. Except simpler code this annotates within one line that given phandle has arguments, so grepping for code would be easier. Reviewed-by: Patrice Chotard Link: https://lore.kernel.org/r/20250525191300.50873-2-krzysztof.kozlowski@linaro.org Signed-off-by: Krzysztof Kozlowski

memory: stm32_omm: Fix error handling in stm32_omm_disable_child()

2025-05-14T07:54:22+00:00

Fix stm32_omm_toggle_child_clock() return value test, we should exit only on non zero value. Fixes: 8181d061dcff ("memory: Add STM32 Octo Memory Manager driver") Signed-off-by: Patrice Chotard Link: https://lore.kernel.org/r/20250513-stm32_omm_fix_typo-v1-1-5b90ec8b52e7@foss.st.com Reported-by: Dan Carpenter Closes: https://lore.kernel.org/all/aB29hOrv0nU73RCn@stanley.mountain/ Signed-off-by: Krzysztof Kozlowski

memory: stm32_omm: Fix NULL vs IS_ERR() check in probe()

2025-05-12T06:32:14+00:00

The platform_get_resource_byname() function returns NULL on error. It doesn't return error pointers. Update the check to match. Fixes: 8181d061dcff ("memory: Add STM32 Octo Memory Manager driver") Signed-off-by: Dan Carpenter Link: https://lore.kernel.org/r/a1645f1eedaa9b2ae62ac07feed0552eea75bc46.1746781081.git.dan.carpenter@linaro.org Signed-off-by: Krzysztof Kozlowski

memory: stm32_omm: Fix error handling in stm32_omm_configure()

2025-05-12T06:32:13+00:00

There are two error handling bugs in the stm32_omm_configure() function. 1) The error code needs to be set if clk_get_rate() fails. 2) If devm_reset_control_get_exclusive() then call pm_runtime_put_sync_suspend() before returning. Fixes: 8181d061dcff ("memory: Add STM32 Octo Memory Manager driver") Signed-off-by: Dan Carpenter Link: https://lore.kernel.org/r/a69ce0445324e994ea2ed7493bda1f6046c7ff69.1746781081.git.dan.carpenter@linaro.org Signed-off-by: Krzysztof Kozlowski

memory: stm32: Fix spelling mistake "resset" -> "reset"

2025-05-12T06:32:08+00:00

There is a spelling mistake in a dev_err message. Fix it. Signed-off-by: Colin Ian King Link: https://lore.kernel.org/r/20250509104459.28167-1-colin.i.king@gmail.com Fixes: 8181d061dcff ("memory: Add STM32 Octo Memory Manager driver") Signed-off-by: Krzysztof Kozlowski

memory: Add STM32 Octo Memory Manager driver

2025-05-07T09:27:01+00:00

Octo Memory Manager driver (OMM) manages: - the muxing between 2 OSPI busses and 2 output ports. There are 4 possible muxing configurations: - direct mode (no multiplexing): OSPI1 output is on port 1 and OSPI2 output is on port 2 - OSPI1 and OSPI2 are multiplexed over the same output port 1 - swapped mode (no multiplexing), OSPI1 output is on port 2, OSPI2 output is on port 1 - OSPI1 and OSPI2 are multiplexed over the same output port 2 - the split of the memory area shared between the 2 OSPI instances. - chip select selection override. - the time between 2 transactions in multiplexed mode. - check firewall access. Signed-off-by: Christophe Kerello Signed-off-by: Patrice Chotard Link: https://lore.kernel.org/r/20250428-upstream_ospi_v6-v11-2-1548736fd9d2@foss.st.com Signed-off-by: Krzysztof Kozlowski