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path: root/drivers/ram/rockchip/sdram_rk3308.c
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Diffstat (limited to 'drivers/ram/rockchip/sdram_rk3308.c')
-rw-r--r--drivers/ram/rockchip/sdram_rk3308.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/ram/rockchip/sdram_rk3308.c b/drivers/ram/rockchip/sdram_rk3308.c
new file mode 100644
index 0000000000..310df79123
--- /dev/null
+++ b/drivers/ram/rockchip/sdram_rk3308.c
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+/*
+ * (C) Copyright 2019 Rockchip Electronics Co., Ltd.
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <ram.h>
+#include <syscon.h>
+#include <asm/arch/grf_rk3308.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/sdram.h>
+
+struct dram_info {
+ struct ram_info info;
+ struct rk3308_grf *grf;
+};
+
+static int rk3308_dmc_probe(struct udevice *dev)
+{
+ struct dram_info *priv = dev_get_priv(dev);
+
+ priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
+ priv->info.base = CONFIG_SYS_SDRAM_BASE;
+ priv->info.size = rockchip_sdram_size((phys_addr_t)&priv->grf->os_reg2);
+
+ return 0;
+}
+
+static int rk3308_dmc_get_info(struct udevice *dev, struct ram_info *info)
+{
+ struct dram_info *priv = dev_get_priv(dev);
+
+ *info = priv->info;
+
+ return 0;
+}
+
+static struct ram_ops rk3308_dmc_ops = {
+ .get_info = rk3308_dmc_get_info,
+};
+
+static const struct udevice_id rk3308_dmc_ids[] = {
+ { .compatible = "rockchip,rk3308-dmc" },
+ { }
+};
+
+U_BOOT_DRIVER(dmc_rk3308) = {
+ .name = "rockchip_rk3308_dmc",
+ .id = UCLASS_RAM,
+ .of_match = rk3308_dmc_ids,
+ .ops = &rk3308_dmc_ops,
+ .probe = rk3308_dmc_probe,
+ .priv_auto_alloc_size = sizeof(struct dram_info),
+};