From: Sergey Lisov <sleirsgoevy@gmail.com>
To: Ulf Hansson <ulf.hansson@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Alim Akhtar <alim.akhtar@samsung.com>,
Jaehoon Chung <jh80.chung@samsung.com>
Cc: linux-mmc@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v3 1/2] dt-bindings: exynos-dw-mshc-common: add exynos78xx variants
Date: Sun, 12 Mar 2023 16:03:15 +0300 [thread overview]
Message-ID: <1678626510.1783316-1-sleirsgoevy@gmail.com> (raw)
In-Reply-To: <1678626510.1783316-0-sleirsgoevy@gmail.com>
Some Samsung Exynos boards using the arm64 architecture have DW MMC
controllers configured for a 32-bit data bus but a 64-bit FIFO. On these
systems the 64-bit FIFO registers must be accessed in two 32-bit halves.
Add two new compatible strings, "samsung,exynos78xx-dw-mshc" and
"samsung,exynos78xx-dw-mshc-smu" respectively, to denote exynos78xx
boards that need this quirk. But it's very possible that all
"samsung,exynos7-dw-mshc" boards are actually affected.
---
.../devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml | 2 ++
arch/arm64/boot/dts/exynos/exynos7885.dtsi | 2 +-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml b/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
index fdaa18481..a72a67792 100644
--- a/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
+++ b/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
@@ -22,6 +22,8 @@ properties:
- samsung,exynos5420-dw-mshc-smu
- samsung,exynos7-dw-mshc
- samsung,exynos7-dw-mshc-smu
+ - samsung,exynos78xx-dw-mshc
+ - samsung,exynos78xx-dw-mshc-smu
- axis,artpec8-dw-mshc
reg:
diff --git a/arch/arm64/boot/dts/exynos/exynos7885.dtsi b/arch/arm64/boot/dts/exynos/exynos7885.dtsi
index 23c2e0bb0..4b94ac9da 100644
--- a/arch/arm64/boot/dts/exynos/exynos7885.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos7885.dtsi
@@ -294,7 +294,7 @@ pmu_system_controller: system-controller@11c80000 {
};
mmc_0: mmc@13500000 {
- compatible = "samsung,exynos7-dw-mshc-smu";
+ compatible = "samsung,exynos78xx-dw-mshc-smu";
reg = <0x13500000 0x2000>;
interrupts = <GIC_SPI 146 IRQ_TYPE_LEVEL_HIGH>;
#address-cells = <1>;
--
2.38.3
next prev parent reply other threads:[~2023-03-12 13:10 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-12 13:03 [PATCH v3 0/2] mmc: dw_mmc: fix DW MMC cores with 32-bit bus on 64-bit Linux systems Sergey Lisov
2023-03-12 13:03 ` [PATCH v3 2/2] mmc: dw_mmc: add an option to force 32-bit access to 64-bit FIFO Sergey Lisov
2023-03-12 13:03 ` Sergey Lisov [this message]
2023-03-12 13:35 ` [PATCH v3 1/2] dt-bindings: exynos-dw-mshc-common: add exynos78xx variants Krzysztof Kozlowski
2023-03-12 16:43 ` Sergey Lisov
[not found] <640e0136.c20a0220.2d5bf.1959@mx.google.com>
2023-03-12 17:09 ` Krzysztof Kozlowski
2023-03-12 17:26 ` Sergey Lisov
[not found] <640e0b2d.c20a0220.63661.19a4@mx.google.com>
2023-03-12 17:29 ` Krzysztof Kozlowski
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