From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx> Parse the "memory-region" property and - if present - use it to assign the dedicated reserved memory to the underlying DMA callbacks which will then allocate memory for the SCM calls from it. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx> --- drivers/firmware/qcom/qcom_scm.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_scm.c index 94c34cde8179..c82957727650 100644 --- a/drivers/firmware/qcom/qcom_scm.c +++ b/drivers/firmware/qcom/qcom_scm.c @@ -23,6 +23,7 @@ #include <linux/of_address.h> #include <linux/of_irq.h> #include <linux/of_platform.h> +#include <linux/of_reserved_mem.h> #include <linux/platform_device.h> #include <linux/reset-controller.h> #include <linux/sizes.h> @@ -1942,6 +1943,11 @@ static int qcom_scm_probe(struct platform_device *pdev) if (of_property_read_bool(pdev->dev.of_node, "qcom,sdi-enabled")) qcom_scm_disable_sdi(); + ret = of_reserved_mem_device_init(__scm->dev); + if (ret && ret != -ENODEV) + return dev_err_probe(__scm->dev, ret, + "Failed to setup the reserved memory region for TZ mem\n"); + ret = qcom_tzmem_enable(__scm->dev); if (ret) return dev_err_probe(__scm->dev, ret, -- 2.43.0
