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misc: stm32: Add STM32MP1 support

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Following next kernel rcc bindings, we must use a MFD
RCC driver which is able to bind both clock and reset
drivers.

We can reuse and adapt RCC MFD driver already available
for MCU SoCs (F4/F7/H7).

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This commit is contained in:
Patrick Delaunay
2018-07-09 15:17:20 +02:00
committed by Tom Rini
parent a674313c2c
commit d090cbab64
6 changed files with 21 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/misc/Kconfig
View File

@@ -169,7 +169,7 @@ config STM32MP_FUSE
config STM32_RCC
bool "Enable RCC driver for the STM32 SoC's family"
depends on STM32 && MISC
depends on (STM32 || ARCH_STM32MP) && MISC
help
Enable the STM32 RCC driver. The RCC block (Reset and Clock Control
block) is responsible of the management of the clock and reset

19
drivers/misc/stm32_rcc.c
View File

@@ -30,6 +30,11 @@ struct stm32_rcc_clk stm32_rcc_clk_h7 = {
.drv_name = "stm32h7_rcc_clock",
};
struct stm32_rcc_clk stm32_rcc_clk_mp1 = {
.drv_name = "stm32mp1_clk",
.soc = STM32MP1,
};
static int stm32_rcc_bind(struct udevice *dev)
{
struct udevice *child;
@@ -39,7 +44,6 @@ static int stm32_rcc_bind(struct udevice *dev)
int ret;
debug("%s(dev=%p)\n", __func__, dev);
drv = lists_driver_lookup_name(rcc_clk->drv_name);
if (!drv) {
debug("Cannot find driver '%s'\n", rcc_clk->drv_name);
@@ -53,9 +57,15 @@ static int stm32_rcc_bind(struct udevice *dev)
if (ret)
return ret;
return device_bind_driver_to_node(dev, "stm32_rcc_reset",
"stm32_rcc_reset",
dev_ofnode(dev), &child);
drv = lists_driver_lookup_name("stm32_rcc_reset");
if (!drv) {
dev_err(dev, "Cannot find driver stm32_rcc_reset'\n");
return -ENOENT;
}
return device_bind_with_driver_data(dev, drv, "stm32_rcc_reset",
rcc_clk->soc,
dev_ofnode(dev), &child);
}
static const struct misc_ops stm32_rcc_ops = {
@@ -66,6 +76,7 @@ static const struct udevice_id stm32_rcc_ids[] = {
{.compatible = "st,stm32f469-rcc", .data = (ulong)&stm32_rcc_clk_f469 },
{.compatible = "st,stm32f746-rcc", .data = (ulong)&stm32_rcc_clk_f7 },
{.compatible = "st,stm32h743-rcc", .data = (ulong)&stm32_rcc_clk_h7 },
{.compatible = "st,stm32mp1-rcc", .data = (ulong)&stm32_rcc_clk_mp1 },
{ }
};