* [PATCH AUTOSEL 4.14 02/12] arm64: dts: rockchip: fix rk3399-puma eMMC HS400 signal integrity
[not found] <20220309162618.137226-1-sashal@kernel.org>
@ 2022-03-09 16:26 ` Sasha Levin
2022-03-09 16:26 ` [PATCH AUTOSEL 4.14 03/12] ARM: dts: rockchip: fix a typo on rk3288 crypto-controller Sasha Levin
1 sibling, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2022-03-09 16:26 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Jakob Unterwurzacher, Quentin Schulz, Quentin Schulz,
Heiko Stuebner, Sasha Levin, robh+dt, devicetree,
linux-arm-kernel, linux-rockchip
From: Jakob Unterwurzacher <jakob.unterwurzacher@theobroma-systems.com>
[ Upstream commit 62966cbdda8a92f82d966a45aa671e788b2006f7 ]
There are signal integrity issues running the eMMC at 200MHz on Puma
RK3399-Q7.
Similar to the work-around found for RK3399 Gru boards, lowering the
frequency to 100MHz made the eMMC much more stable, so let's lower the
frequency to 100MHz.
It might be possible to run at 150MHz as on RK3399 Gru boards but only
100MHz was extensively tested.
Cc: Quentin Schulz <foss+kernel@0leil.net>
Signed-off-by: Jakob Unterwurzacher <jakob.unterwurzacher@theobroma-systems.com>
Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Link: https://lore.kernel.org/r/20220119134948.1444965-1-quentin.schulz@theobroma-systems.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi
index 0d5679380b2a..70fe6013d17c 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi
@@ -484,6 +484,12 @@ vcc5v0_host_en: vcc5v0-host-en {
};
&sdhci {
+ /*
+ * Signal integrity isn't great at 200MHz but 100MHz has proven stable
+ * enough.
+ */
+ max-frequency = <100000000>;
+
bus-width = <8>;
mmc-hs400-1_8v;
mmc-hs400-enhanced-strobe;
--
2.34.1
^ permalink raw reply related [flat|nested] 2+ messages in thread* [PATCH AUTOSEL 4.14 03/12] ARM: dts: rockchip: fix a typo on rk3288 crypto-controller
[not found] <20220309162618.137226-1-sashal@kernel.org>
2022-03-09 16:26 ` [PATCH AUTOSEL 4.14 02/12] arm64: dts: rockchip: fix rk3399-puma eMMC HS400 signal integrity Sasha Levin
@ 2022-03-09 16:26 ` Sasha Levin
1 sibling, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2022-03-09 16:26 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Corentin Labbe, Krzysztof Kozlowski, Heiko Stuebner, Sasha Levin,
robh+dt, linux-arm-kernel, linux-rockchip, devicetree
From: Corentin Labbe <clabbe@baylibre.com>
[ Upstream commit 3916c3619599a3970d3e6f98fb430b7c46266ada ]
crypto-controller had a typo, fix it.
In the same time, rename it to just crypto
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20220209120355.1985707-1-clabbe@baylibre.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/arm/boot/dts/rk3288.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
index 9adb58930c08..872e4e690beb 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -943,7 +943,7 @@ i2s: i2s@ff890000 {
status = "disabled";
};
- crypto: cypto-controller@ff8a0000 {
+ crypto: crypto@ff8a0000 {
compatible = "rockchip,rk3288-crypto";
reg = <0x0 0xff8a0000 0x0 0x4000>;
interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
--
2.34.1
^ permalink raw reply related [flat|nested] 2+ messages in thread