From: Zach Brown <zach.brown@ni.com> To: <ulf.hansson@linaro.org> Cc: <adrian.hunter@intel.com>, <linux-mmc@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <zach.brown@ni.com> Subject: [RFC v2 0/2] mmc: sdhci-pci: Use ACPI to set max frequency of sdio host controller Date: Tue, 15 Nov 2016 10:32:19 -0600 [thread overview] Message-ID: <1479227541-21201-1-git-send-email-zach.brown@ni.com> (raw) On some boards, max SDIO frequency is limited by trace lengths and other layout choices. We would like a way to specify this limitation so the driver can behave accordingly. This patch set assumes that the limitation has been reported in an ACPI table which the driver can check to get the max frequency. The first patch creates a PCI ID and support for the Intel byt sdio where NI is the subvendor. The second patch uses the ACPI table to set f_max during the new ni_byt_sdio_probe_slot. v2: * Use acpi_evaluate_integer() instead of acpi_get_handle()/acpi_evaluate_object() Zach Brown (2): mmc: sdhci-pci: Add PCI ID for Intel byt sdio host controller sub-vended by NI mmc: sdhci-pci: Use ACPI to get max frequency for Intel byt sdio controller sub-vended by NI drivers/mmc/host/sdhci-pci-core.c | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Zach Brown <zach.brown@ni.com> To: ulf.hansson@linaro.org Cc: adrian.hunter@intel.com, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, zach.brown@ni.com Subject: [RFC v2 0/2] mmc: sdhci-pci: Use ACPI to set max frequency of sdio host controller Date: Tue, 15 Nov 2016 10:32:19 -0600 [thread overview] Message-ID: <1479227541-21201-1-git-send-email-zach.brown@ni.com> (raw) On some boards, max SDIO frequency is limited by trace lengths and other layout choices. We would like a way to specify this limitation so the driver can behave accordingly. This patch set assumes that the limitation has been reported in an ACPI table which the driver can check to get the max frequency. The first patch creates a PCI ID and support for the Intel byt sdio where NI is the subvendor. The second patch uses the ACPI table to set f_max during the new ni_byt_sdio_probe_slot. v2: * Use acpi_evaluate_integer() instead of acpi_get_handle()/acpi_evaluate_object() Zach Brown (2): mmc: sdhci-pci: Add PCI ID for Intel byt sdio host controller sub-vended by NI mmc: sdhci-pci: Use ACPI to get max frequency for Intel byt sdio controller sub-vended by NI drivers/mmc/host/sdhci-pci-core.c | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) -- 2.7.4
next reply other threads:[~2016-11-15 16:32 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-11-15 16:32 Zach Brown [this message] 2016-11-15 16:32 ` [RFC v2 0/2] mmc: sdhci-pci: Use ACPI to set max frequency of sdio host controller Zach Brown 2016-11-15 16:32 ` [RFC v2 1/2] mmc: sdhci-pci: Add PCI ID for Intel byt sdio host controller sub-vended by NI Zach Brown 2016-11-15 16:32 ` Zach Brown 2016-11-15 16:32 ` [RFC v2 2/2] mmc: sdhci-pci: Use ACPI to get max frequency for Intel byt sdio " Zach Brown 2016-11-15 16:32 ` Zach Brown 2016-11-17 12:26 ` Adrian Hunter
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