Unverified Commit af103eb7 authored by Jon Lin's avatar Jon Lin Committed by Mark Brown
Browse files

spi: rockchip-sfc: Support sclk_x2 version 



SFC after version 8 supports dtr mode, so the IO is the binary output of
the controller clock.

Signed-off-by: default avatarJon Lin <jon.lin@rock-chips.com>
Link: https://patch.msgid.link/20241219142216.2123065-1-jon.lin@rock-chips.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 1e293574

drivers/spi/spi-rockchip-sfc.c

+19 −2
Original line number Diff line number Diff line
@@ -112,6 +112,7 @@ 
#define  SFC_VER_3			0x3

#define  SFC_VER_4			0x4

#define  SFC_VER_5			0x5

#define  SFC_VER_8			0x8



/* Delay line controller register */

#define SFC_DLL_CTRL0			0x3C
@@ -216,6 +217,22 @@ static u32 rockchip_sfc_get_max_iosize(struct rockchip_sfc *sfc) 
	return SFC_MAX_IOSIZE_VER3;

}



static int rockchip_sfc_clk_set_rate(struct rockchip_sfc *sfc, unsigned long  speed)

{

	if (sfc->version >= SFC_VER_8)

		return clk_set_rate(sfc->clk, speed * 2);

	else

		return clk_set_rate(sfc->clk, speed);

}



static unsigned long rockchip_sfc_clk_get_rate(struct rockchip_sfc *sfc)

{

	if (sfc->version >= SFC_VER_8)

		return clk_get_rate(sfc->clk) / 2;

	else

		return clk_get_rate(sfc->clk);

}



static void rockchip_sfc_irq_unmask(struct rockchip_sfc *sfc, u32 mask)

{

	u32 reg;
@@ -518,12 +535,12 @@ static int rockchip_sfc_exec_mem_op(struct spi_mem *mem, const struct spi_mem_op 


	if (unlikely(mem->spi->max_speed_hz != sfc->speed[cs]) &&

	    !has_acpi_companion(sfc->dev)) {

		ret = clk_set_rate(sfc->clk, mem->spi->max_speed_hz);

		ret = rockchip_sfc_clk_set_rate(sfc, mem->spi->max_speed_hz);

		if (ret)

			goto out;

		sfc->speed[cs] = mem->spi->max_speed_hz;

		dev_dbg(sfc->dev, "set_freq=%dHz real_freq=%ldHz\n",

			sfc->speed[cs], clk_get_rate(sfc->clk));

			sfc->speed[cs], rockchip_sfc_clk_get_rate(sfc));

	}



	rockchip_sfc_adjust_op_work((struct spi_mem_op *)op);