[PATCH v16 39/40] ARM: tegra: Add Memory Client resets to Tegra30 GR2D, GR3D and Host1x

Dmitry Osipenko
2021-11-30T23:28:02Z

Memory access must be blocked before hardware reset is asserted and before
power is gated, otherwise a serious hardware fault is inevitable. Add
reset for memory clients to the GR2D, GR3D and Host1x nodes.

Tested-by: Peter Geis <pgwipeout@gmail.com> # Ouya T30
Tested-by: Matt Merhar <mattmerhar@protonmail.com> # Ouya T30
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
arch/arm/boot/dts/tegra30.dtsi | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi
index 0ac6cb315e8d..96d1c5688248 100644
--- a/arch/arm/boot/dts/tegra30.dtsi
+++ b/arch/arm/boot/dts/tegra30.dtsi
@@ -123,8 +123,8 @@ host1x@50000000 {
interrupt-names = "syncpt", "host1x";
clocks = <&tegra_car TEGRA30_CLK_HOST1X>;
clock-names = "host1x";
- resets = <&tegra_car 28>;
- reset-names = "host1x";
+ resets = <&tegra_car 28>, <&mc TEGRA30_MC_RESET_HC>;
+ reset-names = "host1x", "mc";
iommus = <&mc TEGRA_SWGROUP_HC>;
power-domains = <&pd_heg>;
operating-points-v2 = <&host1x_dvfs_opp_table>;
@@ -190,8 +190,8 @@ gr2d@54140000 {
reg = <0x54140000 0x00040000>;
interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&tegra_car TEGRA30_CLK_GR2D>;
- resets = <&tegra_car 21>;
- reset-names = "2d";
+ resets = <&tegra_car 21>, <&mc TEGRA30_MC_RESET_2D>;
+ reset-names = "2d", "mc";
power-domains = <&pd_heg>;
operating-points-v2 = <&gr2d_dvfs_opp_table>;

@@ -205,8 +205,10 @@ gr3d@54180000 {
<&tegra_car TEGRA30_CLK_GR3D2>;
clock-names = "3d", "3d2";
resets = <&tegra_car 24>,
- <&tegra_car 98>;
- reset-names = "3d", "3d2";
+ <&tegra_car 98>,
+ <&mc TEGRA30_MC_RESET_3D>,
+ <&mc TEGRA30_MC_RESET_3D2>;
+ reset-names = "3d", "3d2", "mc", "mc2";
power-domains = <&pd_3d0>, <&pd_3d1>;
power-domain-names = "3d0", "3d1";
operating-points-v2 = <&gr3d_dvfs_opp_table>;
--
2.33.1