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Thu, 06 Feb 2025 14:10:03 -0800 (PST) From: Kamal Dasu To: ulf.hansson@linaro.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, adrian.hunter@intel.com, linux-mmc@vger.kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, wsa+renesas@sang-engineering.com Cc: f.fainelli@gmail.com, bcm-kernel-feedback-list@broadcom.com, Kamal Dasu Subject: [PATCH RFC 2/3] dt-bindings: mmc: brcm,sdhci-brcmstb: Add sdio sharing support Date: Thu, 6 Feb 2025 17:09:39 -0500 Message-Id: <20250206220940.10553-3-kamal.dasu@broadcom.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20250206220940.10553-1-kamal.dasu@broadcom.com> References: <20250206220940.10553-1-kamal.dasu@broadcom.com> Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: From: Kamal Dasu Introduce emmc flash sharing support using hardware semaphore and SDIO share register to synchronize between TZOS and linux. Signed-off-by: Kamal Dasu --- .../bindings/mmc/brcm,sdhci-brcmstb.yaml | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml b/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml index eee6be7a7867..b0ee39aeccb1 100644 --- a/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml +++ b/Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml @@ -27,15 +27,23 @@ properties: - const: brcm,sdhci-brcmstb reg: - maxItems: 2 + minItems: 2 reg-names: items: - const: host - const: cfg + - const: share # Optional reg + - const: mmc_sem # Optional reg + - const: flshr_ipis0 # Optional reg interrupts: - maxItems: 1 + minItems: 1 + + interrupt-names: + items: + - const: SDIO1_0 + - const: recv_ipi0 # Optional interrupt clocks: minItems: 1 @@ -76,6 +84,7 @@ required: - compatible - reg - interrupts + - interrupt-names - clocks - clock-names @@ -111,7 +120,8 @@ examples: supports-cqe; non-removable; bus-width = <0x8>; - interrupts = <0x0 0x27 0x4>; + interrupts-extended = <0x1 0x0 0x1f 0x4 0x18 0x11>; + interrupt-names = "SDIO1_0", "recv_ipi0"; clocks = <&scmi_clk 245>; clock-names = "sw_sdio"; };