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From:   Ansuel Smith <ansuelsmth@gmail.com>
To:     Andy Gross <agross@kernel.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Rob Herring <robh+dt@kernel.org>,
        linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org
Cc:     Ansuel Smith <ansuelsmth@gmail.com>,
        Jonathan McDowell <noodles@earth.li>
Subject: [PATCH v3 07/18] ARM: dts: qcom: reduce pci IO size to 64K for ipq8064
Date:   Wed,  9 Mar 2022 20:01:41 +0100
Message-Id: <20220309190152.7998-8-ansuelsmth@gmail.com>
In-Reply-To: <20220309190152.7998-1-ansuelsmth@gmail.com>
References: <20220309190152.7998-1-ansuelsmth@gmail.com>
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The current value for pci IO is problematic for ath10k wifi card
commonly connected to ipq8064 SoC.
The current value is probably a typo and is actually uncommon to find
1MB IO space even on a x86 arch. Also with recent changes to the pci
driver, pci1 and pci2 now fails to function as any connected device
fails any reg read/write. Reduce this to 64K as it should be more than
enough and 3 * 64K of total IO space doesn't exceed the IO_SPACE_LIMIT
hardcoded for the ARM arch.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Tested-by: Jonathan McDowell <noodles@earth.li>
---
 arch/arm/boot/dts/qcom-ipq8064.dtsi | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/qcom-ipq8064.dtsi b/arch/arm/boot/dts/qcom-ipq8064.dtsi
index e247bf51df01..36bdfc8db3f0 100644
--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
+++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
@@ -918,7 +918,7 @@ pcie0: pci@1b500000 {
 			#address-cells = <3>;
 			#size-cells = <2>;
 
-			ranges = <0x81000000 0 0x0fe00000 0x0fe00000 0 0x00100000   /* downstream I/O */
+			ranges = <0x81000000 0 0x0fe00000 0x0fe00000 0 0x00010000   /* downstream I/O */
 				  0x82000000 0 0x08000000 0x08000000 0 0x07e00000>; /* non-prefetchable memory */
 
 			interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
@@ -969,7 +969,7 @@ pcie1: pci@1b700000 {
 			#address-cells = <3>;
 			#size-cells = <2>;
 
-			ranges = <0x81000000 0 0x31e00000 0x31e00000 0 0x00100000   /* downstream I/O */
+			ranges = <0x81000000 0 0x31e00000 0x31e00000 0 0x00010000   /* downstream I/O */
 				  0x82000000 0 0x2e000000 0x2e000000 0 0x03e00000>; /* non-prefetchable memory */
 
 			interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
@@ -1020,7 +1020,7 @@ pcie2: pci@1b900000 {
 			#address-cells = <3>;
 			#size-cells = <2>;
 
-			ranges = <0x81000000 0 0x35e00000 0x35e00000 0 0x00100000   /* downstream I/O */
+			ranges = <0x81000000 0 0x35e00000 0x35e00000 0 0x00010000   /* downstream I/O */
 				  0x82000000 0 0x32000000 0x32000000 0 0x03e00000>; /* non-prefetchable memory */
 
 			interrupts = <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>;
-- 
2.34.1