kernel/linux.git/drivers/firmware/imx, branch linux-5.9.y

firmware: imx: Move i.MX SCU soc driver into imx firmware folder

2020-07-13T02:02:00+00:00

The i.MX SCU soc driver depends on SCU firmware driver, so it has to use platform driver model for proper defer probe operation, since it has no device binding in DT file, a simple platform device is created together inside the platform driver. To make it more clean, we can just move the entire SCU soc driver into imx firmware folder and initialized by i.MX SCU firmware driver. Signed-off-by: Anson Huang Signed-off-by: Shawn Guo

firmware: imx: scu-pd: add more cm4 resources

2020-06-23T07:37:59+00:00

Add more cm4 resources, then linux could use cm4's i2c/lpuart and could kick cm4 core. Reviewed-by: Dong Aisheng Signed-off-by: Peng Fan Signed-off-by: Shawn Guo

firmware: imx: add resource management api

2020-06-23T07:37:56+00:00

Add resource management API, when we have multiple partition running together, resources not owned to current partition should not be used. Reviewed-by: Leonard Crestez Reviewed-by: Dong Aisheng Signed-off-by: Peng Fan Signed-off-by: Shawn Guo

firmware: imx: scu-pd: fix cm40 power domain

2020-06-23T07:37:41+00:00

The postfix needs to be false. Alought compiler use 0 for postfix now, and take start_from as 0, it is better we add explicit false to postfix. Fixes: 705dcca91d0a("firmware: imx: scu-pd: add power domain for I2C and INTMUX in CM40 SS") Signed-off-by: Peng Fan Reviewed-by: Dong Aisheng Signed-off-by: Shawn Guo

firmware: imx: make sure MU irq can wake up system from suspend mode

2020-06-17T13:46:09+00:00

IRQF_NO_SUSPEND flag is set for MU IRQ of IPC work, but with this flag set, IRQD_WAKEUP_ARMED flag will NOT be set during suspend_device_irq() phase, then when MU IRQ arrives, it will NOT wake up system from suspend. To fix this issue, pm_system_wakeup() is called in general MU IRQ handler to make sure system can be waked up when MU IRQ arrives. Signed-off-by: Anson Huang Reviewed-by: Dong Aisheng Signed-off-by: Shawn Guo

Merge tag 'imx-drivers-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/drivers

2020-05-25T22:00:47+00:00

i.MX drivers update for 5.8: - Optimize imx-scu driver to use one TX and one RX instead of four for talking to SCU. - Fix one possible message header corruption where the response is longer than the request. - Move System Control defines into dt-bindings header, so that DT can use them as well. - A couple of small fixups. * tag 'imx-drivers-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: firmware: imx: scu: Fix possible memory leak in imx_scu_probe() dt-bindings: firmware: imx: Add more system controls and PM clock types dt-bindings: firmware: imx: Move system control into dt-binding headfile firmware: imx: scu: Fix corruption of header firmware: imx-scu: Support one TX and one RX soc: imx8m: No need to put node when of_find_compatible_node() failed Link: https://lore.kernel.org/r/20200523032516.11016-1-shawnguo@kernel.org Signed-off-by: Arnd Bergmann

firmware: imx: scu: Fix possible memory leak in imx_scu_probe()

2020-05-20T03:33:08+00:00

'chan_name' is malloced in imx_scu_probe() and should be freed before leaving from the error handling cases, otherwise it will cause memory leak. Fixes: edbee095fafb ("firmware: imx: add SCU firmware driver support") Signed-off-by: Wei Yongjun Reviewed-by: Dong Aisheng Signed-off-by: Shawn Guo

dt-bindings: firmware: imx: Move system control into dt-binding headfile

2020-05-13T08:19:23+00:00

i.MX8 SoCs DTS file needs system control macro definitions, so move them into dt-binding headfile, then include/linux/firmware/imx/types.h can be removed and those drivers using it should be changed accordingly. Signed-off-by: Dong Aisheng Signed-off-by: Jacky Bai Signed-off-by: Anson Huang Signed-off-by: Shawn Guo

firmware: imx: scu: Fix corruption of header

2020-04-23T14:35:02+00:00

The header of the message to send can be changed if the response is longer than the request: - 1st word, the header is sent - the remaining words of the message are sent - the response is received asynchronously during the execution of the loop, changing the size field in the header - the for loop test the termination condition using the corrupted header It is the case for the API build_info which has just a header as request but 3 words in response. This issue is fixed storing the header locally instead of using a pointer on it. Fixes: edbee095fafb (firmware: imx: add SCU firmware driver support) Signed-off-by: Franck LENORMAND Reviewed-by: Leonard Crestez Signed-off-by: Leonard Crestez Cc: stable@vger.kernel.org Reviewed-by: Dong Aisheng Signed-off-by: Shawn Guo

firmware: imx-scu: Support one TX and one RX

2020-04-20T14:46:14+00:00

Current imx-scu requires four TX and four RX to communicate with SCU. This is low efficient and causes lots of mailbox interrupts. With imx-mailbox driver could support one TX to use all four transmit registers and one RX to use all four receive registers, imx-scu could use one TX and one RX. Signed-off-by: Peng Fan Signed-off-by: Shawn Guo