From: Yoshihiro Shimoda <[email protected]> This patch adds workaround for 3DG-{A,B} of R-Car E3 ES1.0 because the SoC has a restriction about the order.
Signed-off-by: Yoshihiro Shimoda <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Simon Horman <[email protected]> --- drivers/soc/renesas/r8a77990-sysc.c | 37 ++++++++++++++++++++++++++++++++++++- 1 file changed, 36 insertions(+), 1 deletion(-) diff --git a/drivers/soc/renesas/r8a77990-sysc.c b/drivers/soc/renesas/r8a77990-sysc.c index a8c6417fcd2b..15579ebc5ed2 100644 --- a/drivers/soc/renesas/r8a77990-sysc.c +++ b/drivers/soc/renesas/r8a77990-sysc.c @@ -7,12 +7,13 @@ #include <linux/bug.h> #include <linux/kernel.h> +#include <linux/sys_soc.h> #include <dt-bindings/power/r8a77990-sysc.h> #include "rcar-sysc.h" -static const struct rcar_sysc_area r8a77990_areas[] __initconst = { +static struct rcar_sysc_area r8a77990_areas[] __initdata = { { "always-on", 0, 0, R8A77990_PD_ALWAYS_ON, -1, PD_ALWAYS_ON }, { "ca53-scu", 0x140, 0, R8A77990_PD_CA53_SCU, R8A77990_PD_ALWAYS_ON, PD_SCU }, @@ -27,7 +28,41 @@ static const struct rcar_sysc_area r8a77990_areas[] __initconst = { { "3dg-b", 0x100, 1, R8A77990_PD_3DG_B, R8A77990_PD_3DG_A }, }; +static void __init rcar_sysc_fix_parent(struct rcar_sysc_area *areas, + unsigned int num_areas, u8 id, + int new_parent) +{ + unsigned int i; + + for (i = 0; i < num_areas; i++) + if (areas[i].isr_bit == id) { + areas[i].parent = new_parent; + return; + } +} + +/* Fixups for R-Car E3 ES1.0 revision */ +static const struct soc_device_attribute r8a77990[] __initconst = { + { .soc_id = "r8a77990", .revision = "ES1.0" }, + { /* sentinel */ } +}; + +static int __init r8a77990_sysc_init(void) +{ + if (soc_device_match(r8a77990)) { + rcar_sysc_fix_parent(r8a77990_areas, + ARRAY_SIZE(r8a77990_areas), + R8A77990_PD_3DG_A, R8A77990_PD_3DG_B); + rcar_sysc_fix_parent(r8a77990_areas, + ARRAY_SIZE(r8a77990_areas), + R8A77990_PD_3DG_B, R8A77990_PD_ALWAYS_ON); + } + + return 0; +} + const struct rcar_sysc_info r8a77990_sysc_info __initconst = { + .init = r8a77990_sysc_init, .areas = r8a77990_areas, .num_areas = ARRAY_SIZE(r8a77990_areas), }; -- 2.11.0
