On 07/25/2016 12:50 PM, Kever Yang wrote:
This patch add driver for:
[snip]
...
+
+static ulong rk3399_clk_set_rate(struct clk *clk, ulong rate)
+{
+ struct rk3399_clk_priv *priv = dev_get_priv(clk->dev);
+
+ switch (clk->id) {
+ case 0 ... 63:
+ return 0;
+ case SCLK_SDMMC:
+ case SCLK_EMMC:
+ rk3399_mmc_set_clk(priv->cru, clk->id, rate);
+ break;
+ case SCLK_I2C1:
+ case SCLK_I2C2:
+ case SCLK_I2C3:
+ case SCLK_I2C5:
+ case SCLK_I2C6:
+ case SCLK_I2C7:
+ rk3399_i2c_set_clk(priv->cru, clk->id, rate);
+ break;
+ case DCLK_VOP0:
+ case DCLK_VOP1:
+ rk3399_vop_set_clk(priv->cru, clk->id, rate);
+ break;
+ default:
+ return -ENOENT;
+ }
+
+ return 0;
It suppose to return a real clock rate instead a '0' here, will update
with other
potential comments later.
Thanks,
- Kever
+}
+
+static struct clk_ops rk3399_clk_ops = {
+ .get_rate = rk3399_clk_get_rate,
+ .set_rate = rk3399_clk_set_rate,
+};
+
+void *rockchip_get_cru(void)
+{
+ struct udevice *dev;
+ fdt_addr_t addr;
+ int ret;
+
+ ret = uclass_get_device_by_name(UCLASS_CLK,
+ "clock-controller@ff760000",
+ &dev);
+ if (ret)
+ return ERR_PTR(ret);
+
+ addr = dev_get_addr(dev);
+ if (addr == FDT_ADDR_T_NONE)
+ return ERR_PTR(-EINVAL);
+
+ return (void *)addr;
+}
+
+static int rk3399_clk_probe(struct udevice *dev)
+{
+ struct rk3399_clk_priv *priv = dev_get_priv(dev);
+
+ priv->cru = (struct rk3399_cru *)dev_get_addr(dev);
+ rkclk_init(priv->cru);
+
+ return 0;
+}
+
+static int rk3399_clk_bind(struct udevice *dev)
+{
+ int ret;
+
+ /* The reset driver does not have a device node, so bind it here */
+ ret = device_bind_driver(gd->dm_root, "rk3399_sysreset", "reset", &dev);
+ if (ret)
+ printf("Warning: No RK3399 reset driver: ret=%d\n", ret);
+
+ return 0;
+}
+
+static const struct udevice_id rk3399_clk_ids[] = {
+ { .compatible = "rockchip,rk3399-cru" },
+ { }
+};
+
+U_BOOT_DRIVER(clk_rk3399) = {
+ .name = "clk_rk3399",
+ .id = UCLASS_CLK,
+ .of_match = rk3399_clk_ids,
+ .priv_auto_alloc_size = sizeof(struct rk3399_clk_priv),
+ .ops = &rk3399_clk_ops,
+ .bind = rk3399_clk_bind,
+ .probe = rk3399_clk_probe,
+};
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
