pico-imx8mm: adjust CMA size to 320MB when DRAM capacity is 1GB

TechNexion · Apr 28, 2021 · 2353504 · 2353504
1 parent a78f024
commit 2353504
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diff --git a/board/technexion/pico-imx8mm/pico-imx8mm.c b/board/technexion/pico-imx8mm/pico-imx8mm.c
@@ -412,6 +412,28 @@ int detect_tevi_camera(void)
 	return 0;
 }
 
+#ifdef CONFIG_OF_BOARD_SETUP
+int ft_board_setup(void *blob, bd_t *bd)
+{
+	const int *cell;
+	int offs;
+	uint32_t cma_size;
+	char *cmasize;
+
+	offs = fdt_path_offset(blob, "/reserved-memory/linux,cma");
+	cell = fdt_getprop(blob, offs, "size", NULL);
+	cma_size = fdt32_to_cpu(cell[1]);
+	cmasize = env_get("cma_size");
+	if(cmasize || ((uint32_t)(mem_map[DRAM1_INDEX].size >> 1) < cma_size)) {
+		cma_size = env_get_ulong("cma_size", 10, 320 * 1024 * 1024);
+		cma_size = min((uint32_t)(mem_map[DRAM1_INDEX].size >> 1), cma_size);
+		fdt_setprop_u64(blob, offs, "size", (uint64_t)cma_size);
+	}
+
+	return 0;
+}
+#endif
+
 int board_late_init(void)
 {
 

diff --git a/configs/pico-imx8mm_defconfig b/configs/pico-imx8mm_defconfig
@@ -24,6 +24,7 @@ CONFIG_FIT=y
 CONFIG_FIT_EXTERNAL_OFFSET=0x3000
 CONFIG_SPL_LOAD_FIT=y
 CONFIG_SPL_FIT_GENERATOR="arch/arm/mach-imx/mkimage_fit_atf.sh"
+CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_SYSTEM_SETUP=y
 CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/mach-imx/imx8m/imximage-8mm-lpddr4.cfg"
 CONFIG_DEFAULT_FDT_FILE="imx8mm-pico-pi.dtb"