From: Rick Wertenbroek <rick.wertenbroek@gmail.com>
To: alberto.dassatti@heig-vd.ch
Cc: damien.lemoal@opensource.wdc.com, xxm@rock-chips.com,
"Rick Wertenbroek" <rick.wertenbroek@gmail.com>,
"Shawn Lin" <shawn.lin@rock-chips.com>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Rob Herring" <robh@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
"Heiko Stuebner" <heiko@sntech.de>,
"Johan Jonker" <jbx6244@gmail.com>,
"Brian Norris" <briannorris@chromium.org>,
"Caleb Connolly" <kc@postmarketos.org>,
"Corentin Labbe" <clabbe@baylibre.com>,
"Judy Hsiao" <judyhsiao@chromium.org>,
"Lin Huang" <hl@rock-chips.com>,
"Hugh Cole-Baker" <sigmaris@gmail.com>,
"Arnaud Ferraris" <arnaud.ferraris@collabora.com>,
linux-pci@vger.kernel.org, linux-rockchip@lists.infradead.org,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v3 01/11] PCI: rockchip: Remove writes to unused registers
Date: Tue, 4 Apr 2023 10:24:14 +0200 [thread overview]
Message-ID: <20230404082426.3880812-2-rick.wertenbroek@gmail.com> (raw)
In-Reply-To: <20230404082426.3880812-1-rick.wertenbroek@gmail.com>
Remove write accesses to registers that are marked "unused" (and
therefore read-only) in the technical reference manual (TRM)
(see RK3399 TRM 17.6.8.1)
Signed-off-by: Rick Wertenbroek <rick.wertenbroek@gmail.com>
---
drivers/pci/controller/pcie-rockchip-ep.c | 10 ----------
1 file changed, 10 deletions(-)
diff --git a/drivers/pci/controller/pcie-rockchip-ep.c b/drivers/pci/controller/pcie-rockchip-ep.c
index d1a200b93b2b..d5c477020417 100644
--- a/drivers/pci/controller/pcie-rockchip-ep.c
+++ b/drivers/pci/controller/pcie-rockchip-ep.c
@@ -61,10 +61,6 @@ static void rockchip_pcie_clear_ep_ob_atu(struct rockchip_pcie *rockchip,
ROCKCHIP_PCIE_AT_OB_REGION_DESC0(region));
rockchip_pcie_write(rockchip, 0,
ROCKCHIP_PCIE_AT_OB_REGION_DESC1(region));
- rockchip_pcie_write(rockchip, 0,
- ROCKCHIP_PCIE_AT_OB_REGION_CPU_ADDR0(region));
- rockchip_pcie_write(rockchip, 0,
- ROCKCHIP_PCIE_AT_OB_REGION_CPU_ADDR1(region));
}
static void rockchip_pcie_prog_ep_ob_atu(struct rockchip_pcie *rockchip, u8 fn,
@@ -114,12 +110,6 @@ static void rockchip_pcie_prog_ep_ob_atu(struct rockchip_pcie *rockchip, u8 fn,
PCIE_CORE_OB_REGION_ADDR0_LO_ADDR);
addr1 = upper_32_bits(cpu_addr);
}
-
- /* CPU bus address region */
- rockchip_pcie_write(rockchip, addr0,
- ROCKCHIP_PCIE_AT_OB_REGION_CPU_ADDR0(r));
- rockchip_pcie_write(rockchip, addr1,
- ROCKCHIP_PCIE_AT_OB_REGION_CPU_ADDR1(r));
}
static int rockchip_pcie_ep_write_header(struct pci_epc *epc, u8 fn, u8 vfn,
--
2.25.1
next prev parent reply other threads:[~2023-04-04 8:25 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-04 8:24 [PATCH v3 00/11] PCI: rockchip: Fix RK3399 PCIe endpoint controller driver Rick Wertenbroek
2023-04-04 8:24 ` Rick Wertenbroek [this message]
2023-04-04 8:24 ` [PATCH v3 02/11] PCI: rockchip: Write PCI Device ID to correct register Rick Wertenbroek
2023-04-04 8:24 ` [PATCH v3 03/11] PCI: rockchip: Assert PCI Configuration Enable bit after probe Rick Wertenbroek
2023-04-04 8:24 ` [PATCH v3 04/11] PCI: rockchip: Add poll and timeout to wait for PHY PLLs to be locked Rick Wertenbroek
2023-04-04 8:24 ` [PATCH v3 05/11] arm64: dts: rockchip: Add dtsi entry for RK3399 PCIe endpoint core Rick Wertenbroek
2023-04-04 8:24 ` [PATCH v3 06/11] dt-bindings: PCI: Update the RK3399 example to a valid one Rick Wertenbroek
2023-04-04 8:45 ` Krzysztof Kozlowski
2023-04-04 8:58 ` Rick Wertenbroek
2023-04-04 13:29 ` Krzysztof Kozlowski
2023-04-04 14:42 ` Rick Wertenbroek
2023-04-04 8:24 ` [PATCH v3 07/11] PCI: rockchip: Fix legacy IRQ generation for RK3399 PCIe endpoint core Rick Wertenbroek
2023-04-04 8:24 ` [PATCH v3 08/11] PCI: rockchip: Fix window mapping and address translation for endpoint Rick Wertenbroek
2023-04-05 11:43 ` Damien Le Moal
2023-04-04 8:24 ` [PATCH v3 09/11] PCI: rockchip: Use u32 variable to access 32-bit registers Rick Wertenbroek
2023-04-04 8:24 ` [PATCH v3 10/11] PCI: rockchip: Don't advertise MSI-X in PCIe capabilities Rick Wertenbroek
2023-04-05 11:50 ` Damien Le Moal
2023-04-04 8:24 ` [PATCH v3 11/11] PCI: rockchip: Set address alignment for endpoint mode Rick Wertenbroek
2023-04-05 9:23 ` [PATCH v3 00/11] PCI: rockchip: Fix RK3399 PCIe endpoint controller driver Damien Le Moal
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