pmdomain: renesas: r8a77980-sysc: CR7 must be always on

commit f0e4a1356466ec1858ae8e5c70bea2ce5e55008b upstream.

The power domain containing the Cortex-R7 CPU core on the R-Car V3H SoC
must always be in power-on state, unlike on other SoCs in the R-Car Gen3
family.  See Table 9.4 "Power domains" in the R-Car Series, 3rd
Generation Hardware User’s Manual Rev.1.00 and later.

Fix this by marking the domain as a CPU domain without control
registers, so the driver will not touch it.

Fixes: 41d6d8bd8ae9 ("soc: renesas: rcar-sysc: add R8A77980 support")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/fdad9a86132d53ecddf72b734dac406915c4edc0.1705076735.git.geert+renesas@glider.be
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/pmdomain/renesas/r8a77980-sysc.c b/drivers/pmdomain/renesas/r8a77980-sysc.c
index 39ca84a67daadd21202e1ba80f13ec6cbc671a7a..621e411fc9991a4050cd6da699695912f18a46b0 100644 (file)
--- a/drivers/pmdomain/renesas/r8a77980-sysc.c
+++ b/drivers/pmdomain/renesas/r8a77980-sysc.c
@@ -25,7 +25,8 @@ static const struct rcar_sysc_area r8a77980_areas[] __initconst = {
          PD_CPU_NOCR },
        { "ca53-cpu3",  0x200, 3, R8A77980_PD_CA53_CPU3, R8A77980_PD_CA53_SCU,
          PD_CPU_NOCR },
-       { "cr7",        0x240, 0, R8A77980_PD_CR7,      R8A77980_PD_ALWAYS_ON },
+       { "cr7",        0x240, 0, R8A77980_PD_CR7,      R8A77980_PD_ALWAYS_ON,
+         PD_CPU_NOCR },
        { "a3ir",       0x180, 0, R8A77980_PD_A3IR,     R8A77980_PD_ALWAYS_ON },
        { "a2ir0",      0x400, 0, R8A77980_PD_A2IR0,    R8A77980_PD_A3IR },
        { "a2ir1",      0x400, 1, R8A77980_PD_A2IR1,    R8A77980_PD_A3IR },