This allows the basic registers of the general register files to be supplied
by a syscon instead of being mapped locally.
The GRF registers contain a lot more than pinctrl functions like dma, usb-phy
and general soc control and status registers, intermixed with the iomux, pull
and drive-strength registers.
Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx>
Tested-by: Max Schwarz <max.schwarz@xxxxxxxxx>
---
drivers/pinctrl/pinctrl-rockchip.c | 47 +++++++++++++++++++++++---------------
1 file changed, 28 insertions(+), 19 deletions(-)
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index d6e2401..bb805d5 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -1574,30 +1574,39 @@ static int rockchip_pinctrl_probe(struct platform_device *pdev)
}
info->ctrl = ctrl;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(base))
- return PTR_ERR(base);
-
- rockchip_regmap_config.max_register = resource_size(res) - 4;
- rockchip_regmap_config.name = "rockchip,pinctrl";
- info->regmap_base = devm_regmap_init_mmio(&pdev->dev, base,
- &rockchip_regmap_config);
-
- /* to check for the old dt-bindings */
- info->reg_size = resource_size(res);
-
- /* Honor the old binding, with pull registers as 2nd resource */
- if (ctrl->type == RK3188 && info->reg_size < 0x200) {
- res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ node = of_parse_phandle(np, "rockchip,grf", 0);
+ if (node) {
+ info->regmap_base = syscon_node_to_regmap(node);
+ if (IS_ERR(info->regmap_base))
+ return PTR_ERR(info->regmap_base);
+ } else {
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(base))
return PTR_ERR(base);
rockchip_regmap_config.max_register = resource_size(res) - 4;
- rockchip_regmap_config.name = "rockchip,pinctrl-pull";
- info->regmap_pull = devm_regmap_init_mmio(&pdev->dev, base,
- &rockchip_regmap_config);
+ rockchip_regmap_config.name = "rockchip,pinctrl";
+ info->regmap_base = devm_regmap_init_mmio(&pdev->dev, base,
+ &rockchip_regmap_config);
+
+ /* to check for the old dt-bindings */
+ info->reg_size = resource_size(res);
+
+ /* Honor the old binding, with pull registers as 2nd resource */
+ if (ctrl->type == RK3188 && info->reg_size < 0x200) {
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ rockchip_regmap_config.max_register =
+ resource_size(res) - 4;
+ rockchip_regmap_config.name = "rockchip,pinctrl-pull";
+ info->regmap_pull = devm_regmap_init_mmio(&pdev->dev,
+ base,
+ &rockchip_regmap_config);
+ }
}
/* try to find the optional reference to the pmu syscon */
--
1.9.0
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
