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Commit 578d601c authored by Geert Uytterhoeven's avatar Geert Uytterhoeven
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clk: renesas: r8a7778: Obtain mode pin values using R-Car RST driver 



Obtain the values of the mode pins from the R-Car RST driver, which
relies on the presence in DT of a device node for the RESET/WDT module.

Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Acked-by: default avatarDirk Behme <dirk.behme@de.bosch.com>
parent 65f922c7

drivers/clk/renesas/clk-r8a7778.c

+13 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
#include <linux/clk/renesas.h>

#include <linux/of_address.h>

#include <linux/slab.h>

#include <linux/soc/renesas/rcar-rst.h>



struct r8a7778_cpg {

	struct clk_onecell_data data;
@@ -83,6 +84,18 @@ static void __init r8a7778_cpg_clocks_init(struct device_node *np) 
	struct clk **clks;

	unsigned int i;

	int num_clks;

	u32 mode;



	if (rcar_rst_read_mode_pins(&mode))

		return;



	BUG_ON(!(mode & BIT(19)));



	cpg_mode_rates = (!!(mode & BIT(18)) << 2) |

			 (!!(mode & BIT(12)) << 1) |

			 (!!(mode & BIT(11)));

	cpg_mode_divs = (!!(mode & BIT(2)) << 1) |

			(!!(mode & BIT(1)));



	num_clks = of_property_count_strings(np, "clock-output-names");

	if (num_clks < 0) {