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spi: rpc: Add support for operation without clock framework

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Add ifdeffery to allow operation without the clock framework
enabled. This is required on RZ/A1, as it does not have clock
driver yet.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Chris Brandt <chris.brandt@renesas.com>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
This commit is contained in:
Marek Vasut 2019-05-04 18:52:33 +02:00 committed by Marek Vasut
parent 24b3247e24
commit b5b6656794
2 changed files with 9 additions and 5 deletions
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2
drivers/spi/Kconfig
View File

@ -173,7 +173,7 @@ config PL022_SPI
config RENESAS_RPC_SPI
bool "Renesas RPC SPI driver"
depends on RCAR_GEN3
depends on RCAR_GEN3 || RZA1
imply SPI_FLASH_BAR
help
Enable the Renesas RPC SPI driver, used to access SPI NOR flash

12
drivers/spi/renesas_rpc_spi.c
View File

@ -409,27 +409,30 @@ static int rpc_spi_probe(struct udevice *dev)
priv->regs = plat->regs;
priv->extr = plat->extr;
#if CONFIG_IS_ENABLED(CLK)
clk_enable(&priv->clk);
#endif
return 0;
}
static int rpc_spi_ofdata_to_platdata(struct udevice *bus)
{
struct rpc_spi_platdata *plat = dev_get_platdata(bus);
struct rpc_spi_priv *priv = dev_get_priv(bus);
int ret;
plat->regs = dev_read_addr_index(bus, 0);
plat->extr = dev_read_addr_index(bus, 1);
#if CONFIG_IS_ENABLED(CLK)
struct rpc_spi_priv *priv = dev_get_priv(bus);
int ret;
ret = clk_get_by_index(bus, 0, &priv->clk);
if (ret < 0) {
printf("%s: Could not get clock for %s: %d\n",
__func__, bus->name, ret);
return ret;
}
#endif
plat->freq = dev_read_u32_default(bus, "spi-max-freq", 50000000);
@ -448,6 +451,7 @@ static const struct udevice_id rpc_spi_ids[] = {
{ .compatible = "renesas,rpc-r8a77965" },
{ .compatible = "renesas,rpc-r8a77970" },
{ .compatible = "renesas,rpc-r8a77995" },
{ .compatible = "renesas,rpc-r7s72100" },
{ }
};