Re: [PATCH v7 3/4] PCI: qcom: Add equalization settings for 16.0 GT/s

[Johan Hovold]

On Wed, Sep 11, 2024 at 08:56:28PM +0530, Manivannan Sadhasivam via B4 Relay wrote:
> From: Shashank Babu Chinta Venkata <quic_schintav@xxxxxxxxxxx>
> 
> During high data transmission rates such as 16.0 GT/s, there is an
> increased risk of signal loss due to poor channel quality and interference.
> This can impact receiver's ability to capture signals accurately. Hence,
> signal compensation is achieved through appropriate lane equalization
> settings at both transmitter and receiver. This will result in increased
> PCIe signal strength.
> 
> While at it, let's also modify the pcie-tegra194 driver to make use of the
> common GEN3_EQ_CONTROL_OFF definitions in pcie-designware.h.
> 
> Signed-off-by: Shashank Babu Chinta Venkata <quic_schintav@xxxxxxxxxxx>
> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
> [mani: dropped the code refactoring and minor changes]
> Tested-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>

Reviewed-by: Johan Hovold <johan+linaro@xxxxxxxxxx>